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general-template.php

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Last change on this file was 51048, checked in by SergeyBiryukov, 2 months ago

Docs: Improve documentation for the wp_resource_hints filter.

Clarify that as of WordPress 4.7, the $urls parameter can accept arrays of specific HTML attributes as its child elements, in addition to URLs.

Follow-up to [37920], [38826].

Props vanyukov, Rahmohn, desrosj, peterwilsoncc, SergeyBiryukov.
Fixes #52842.

Property svn:eol-style set to native

File size: 154.5 KB

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1	<?php
2	/**
3	* General template tags that can go anywhere in a template.
4	*
5	* @package WordPress
6	* @subpackage Template
7	*/
8
9	/**
10	* Load header template.
11	*
12	* Includes the header template for a theme or if a name is specified then a
13	* specialised header will be included.
14	*
15	* For the parameter, if the file is called "header-special.php" then specify
16	* "special".
17	*
18	* @since 1.5.0
19	* @since 5.5.0 A return value was added.
20	* @since 5.5.0 The `$args` parameter was added.
21	*
22	* @param string $name The name of the specialised header.
23	* @param array $args Optional. Additional arguments passed to the header template.
24	* Default empty array.
25	* @return void\|false Void on success, false if the template does not exist.
26	*/
27	function get_header( $name = null, $args = array() ) {
28	/**
29	* Fires before the header template file is loaded.
30	*
31	* @since 2.1.0
32	* @since 2.8.0 The `$name` parameter was added.
33	* @since 5.5.0 The `$args` parameter was added.
34	*
35	* @param string\|null $name Name of the specific header file to use. Null for the default header.
36	* @param array $args Additional arguments passed to the header template.
37	*/
38	do_action( 'get_header', $name, $args );
39
40	$templates = array();
41	$name = (string) $name;
42	if ( '' !== $name ) {
43	$templates[] = "header-{$name}.php";
44	}
45
46	$templates[] = 'header.php';
47
48	if ( ! locate_template( $templates, true, true, $args ) ) {
49	return false;
50	}
51	}
52
53	/**
54	* Load footer template.
55	*
56	* Includes the footer template for a theme or if a name is specified then a
57	* specialised footer will be included.
58	*
59	* For the parameter, if the file is called "footer-special.php" then specify
60	* "special".
61	*
62	* @since 1.5.0
63	* @since 5.5.0 A return value was added.
64	* @since 5.5.0 The `$args` parameter was added.
65	*
66	* @param string $name The name of the specialised footer.
67	* @param array $args Optional. Additional arguments passed to the footer template.
68	* Default empty array.
69	* @return void\|false Void on success, false if the template does not exist.
70	*/
71	function get_footer( $name = null, $args = array() ) {
72	/**
73	* Fires before the footer template file is loaded.
74	*
75	* @since 2.1.0
76	* @since 2.8.0 The `$name` parameter was added.
77	* @since 5.5.0 The `$args` parameter was added.
78	*
79	* @param string\|null $name Name of the specific footer file to use. Null for the default footer.
80	* @param array $args Additional arguments passed to the footer template.
81	*/
82	do_action( 'get_footer', $name, $args );
83
84	$templates = array();
85	$name = (string) $name;
86	if ( '' !== $name ) {
87	$templates[] = "footer-{$name}.php";
88	}
89
90	$templates[] = 'footer.php';
91
92	if ( ! locate_template( $templates, true, true, $args ) ) {
93	return false;
94	}
95	}
96
97	/**
98	* Load sidebar template.
99	*
100	* Includes the sidebar template for a theme or if a name is specified then a
101	* specialised sidebar will be included.
102	*
103	* For the parameter, if the file is called "sidebar-special.php" then specify
104	* "special".
105	*
106	* @since 1.5.0
107	* @since 5.5.0 A return value was added.
108	* @since 5.5.0 The `$args` parameter was added.
109	*
110	* @param string $name The name of the specialised sidebar.
111	* @param array $args Optional. Additional arguments passed to the sidebar template.
112	* Default empty array.
113	* @return void\|false Void on success, false if the template does not exist.
114	*/
115	function get_sidebar( $name = null, $args = array() ) {
116	/**
117	* Fires before the sidebar template file is loaded.
118	*
119	* @since 2.2.0
120	* @since 2.8.0 The `$name` parameter was added.
121	* @since 5.5.0 The `$args` parameter was added.
122	*
123	* @param string\|null $name Name of the specific sidebar file to use. Null for the default sidebar.
124	* @param array $args Additional arguments passed to the sidebar template.
125	*/
126	do_action( 'get_sidebar', $name, $args );
127
128	$templates = array();
129	$name = (string) $name;
130	if ( '' !== $name ) {
131	$templates[] = "sidebar-{$name}.php";
132	}
133
134	$templates[] = 'sidebar.php';
135
136	if ( ! locate_template( $templates, true, true, $args ) ) {
137	return false;
138	}
139	}
140
141	/**
142	* Loads a template part into a template.
143	*
144	* Provides a simple mechanism for child themes to overload reusable sections of code
145	* in the theme.
146	*
147	* Includes the named template part for a theme or if a name is specified then a
148	* specialised part will be included. If the theme contains no {slug}.php file
149	* then no template will be included.
150	*
151	* The template is included using require, not require_once, so you may include the
152	* same template part multiple times.
153	*
154	* For the $name parameter, if the file is called "{slug}-special.php" then specify
155	* "special".
156	*
157	* @since 3.0.0
158	* @since 5.5.0 A return value was added.
159	* @since 5.5.0 The `$args` parameter was added.
160	*
161	* @param string $slug The slug name for the generic template.
162	* @param string $name The name of the specialised template.
163	* @param array $args Optional. Additional arguments passed to the template.
164	* Default empty array.
165	* @return void\|false Void on success, false if the template does not exist.
166	*/
167	function get_template_part( $slug, $name = null, $args = array() ) {
168	/**
169	* Fires before the specified template part file is loaded.
170	*
171	* The dynamic portion of the hook name, `$slug`, refers to the slug name
172	* for the generic template part.
173	*
174	* @since 3.0.0
175	* @since 5.5.0 The `$args` parameter was added.
176	*
177	* @param string $slug The slug name for the generic template.
178	* @param string\|null $name The name of the specialized template.
179	* @param array $args Additional arguments passed to the template.
180	*/
181	do_action( "get_template_part_{$slug}", $slug, $name, $args );
182
183	$templates = array();
184	$name = (string) $name;
185	if ( '' !== $name ) {
186	$templates[] = "{$slug}-{$name}.php";
187	}
188
189	$templates[] = "{$slug}.php";
190
191	/**
192	* Fires before a template part is loaded.
193	*
194	* @since 5.2.0
195	* @since 5.5.0 The `$args` parameter was added.
196	*
197	* @param string $slug The slug name for the generic template.
198	* @param string $name The name of the specialized template.
199	* @param string[] $templates Array of template files to search for, in order.
200	* @param array $args Additional arguments passed to the template.
201	*/
202	do_action( 'get_template_part', $slug, $name, $templates, $args );
203
204	if ( ! locate_template( $templates, true, false, $args ) ) {
205	return false;
206	}
207	}
208
209	/**
210	* Display search form.
211	*
212	* Will first attempt to locate the searchform.php file in either the child or
213	* the parent, then load it. If it doesn't exist, then the default search form
214	* will be displayed. The default search form is HTML, which will be displayed.
215	* There is a filter applied to the search form HTML in order to edit or replace
216	* it. The filter is {@see 'get_search_form'}.
217	*
218	* This function is primarily used by themes which want to hardcode the search
219	* form into the sidebar and also by the search widget in WordPress.
220	*
221	* There is also an action that is called whenever the function is run called,
222	* {@see 'pre_get_search_form'}. This can be useful for outputting JavaScript that the
223	* search relies on or various formatting that applies to the beginning of the
224	* search. To give a few examples of what it can be used for.
225	*
226	* @since 2.7.0
227	* @since 5.2.0 The `$args` array parameter was added in place of an `$echo` boolean flag.
228	*
229	* @param array $args {
230	* Optional. Array of display arguments.
231	*
232	* @type bool $echo Whether to echo or return the form. Default true.
233	* @type string $aria_label ARIA label for the search form. Useful to distinguish
234	* multiple search forms on the same page and improve
235	* accessibility. Default empty.
236	* }
237	* @return void\|string Void if 'echo' argument is true, search form HTML if 'echo' is false.
238	*/
239	function get_search_form( $args = array() ) {
240	/**
241	* Fires before the search form is retrieved, at the start of get_search_form().
242	*
243	* @since 2.7.0 as 'get_search_form' action.
244	* @since 3.6.0
245	* @since 5.5.0 The `$args` parameter was added.
246	*
247	* @link https://core.trac.wordpress.org/ticket/19321
248	*
249	* @param array $args The array of arguments for building the search form.
250	* See get_search_form() for information on accepted arguments.
251	*/
252	do_action( 'pre_get_search_form', $args );
253
254	$echo = true;
255
256	if ( ! is_array( $args ) ) {
257	/*
258	* Back compat: to ensure previous uses of get_search_form() continue to
259	* function as expected, we handle a value for the boolean $echo param removed
260	* in 5.2.0. Then we deal with the $args array and cast its defaults.
261	*/
262	$echo = (bool) $args;
263
264	// Set an empty array and allow default arguments to take over.
265	$args = array();
266	}
267
268	// Defaults are to echo and to output no custom label on the form.
269	$defaults = array(
270	'echo' => $echo,
271	'aria_label' => '',
272	);
273
274	$args = wp_parse_args( $args, $defaults );
275
276	/**
277	* Filters the array of arguments used when generating the search form.
278	*
279	* @since 5.2.0
280	*
281	* @param array $args The array of arguments for building the search form.
282	* See get_search_form() for information on accepted arguments.
283	*/
284	$args = apply_filters( 'search_form_args', $args );
285
286	// Ensure that the filtered arguments contain all required default values.
287	$args = array_merge( $defaults, $args );
288
289	$format = current_theme_supports( 'html5', 'search-form' ) ? 'html5' : 'xhtml';
290
291	/**
292	* Filters the HTML format of the search form.
293	*
294	* @since 3.6.0
295	* @since 5.5.0 The `$args` parameter was added.
296	*
297	* @param string $format The type of markup to use in the search form.
298	* Accepts 'html5', 'xhtml'.
299	* @param array $args The array of arguments for building the search form.
300	* See get_search_form() for information on accepted arguments.
301	*/
302	$format = apply_filters( 'search_form_format', $format, $args );
303
304	$search_form_template = locate_template( 'searchform.php' );
305
306	if ( '' !== $search_form_template ) {
307	ob_start();
308	require $search_form_template;
309	$form = ob_get_clean();
310	} else {
311	// Build a string containing an aria-label to use for the search form.
312	if ( $args['aria_label'] ) {
313	$aria_label = 'aria-label="' . esc_attr( $args['aria_label'] ) . '" ';
314	} else {
315	/*
316	* If there's no custom aria-label, we can set a default here. At the
317	* moment it's empty as there's uncertainty about what the default should be.
318	*/
319	$aria_label = '';
320	}
321
322	if ( 'html5' === $format ) {
323	$form = '<form role="search" ' . $aria_label . 'method="get" class="search-form" action="' . esc_url( home_url( '/' ) ) . '">
324	<label>
325	<span class="screen-reader-text">' . _x( 'Search for:', 'label' ) . '</span>
326	<input type="search" class="search-field" placeholder="' . esc_attr_x( 'Search …', 'placeholder' ) . '" value="' . get_search_query() . '" name="s" />
327	</label>
328	<input type="submit" class="search-submit" value="' . esc_attr_x( 'Search', 'submit button' ) . '" />
329	</form>';
330	} else {
331	$form = '<form role="search" ' . $aria_label . 'method="get" id="searchform" class="searchform" action="' . esc_url( home_url( '/' ) ) . '">
332	<div>
333	<label class="screen-reader-text" for="s">' . _x( 'Search for:', 'label' ) . '</label>
334	<input type="text" value="' . get_search_query() . '" name="s" id="s" />
335	<input type="submit" id="searchsubmit" value="' . esc_attr_x( 'Search', 'submit button' ) . '" />
336	</div>
337	</form>';
338	}
339	}
340
341	/**
342	* Filters the HTML output of the search form.
343	*
344	* @since 2.7.0
345	* @since 5.5.0 The `$args` parameter was added.
346	*
347	* @param string $form The search form HTML output.
348	* @param array $args The array of arguments for building the search form.
349	* See get_search_form() for information on accepted arguments.
350	*/
351	$result = apply_filters( 'get_search_form', $form, $args );
352
353	if ( null === $result ) {
354	$result = $form;
355	}
356
357	if ( $args['echo'] ) {
358	echo $result;
359	} else {
360	return $result;
361	}
362	}
363
364	/**
365	* Display the Log In/Out link.
366	*
367	* Displays a link, which allows users to navigate to the Log In page to log in
368	* or log out depending on whether they are currently logged in.
369	*
370	* @since 1.5.0
371	*
372	* @param string $redirect Optional path to redirect to on login/logout.
373	* @param bool $echo Default to echo and not return the link.
374	* @return void\|string Void if `$echo` argument is true, log in/out link if `$echo` is false.
375	*/
376	function wp_loginout( $redirect = '', $echo = true ) {
377	if ( ! is_user_logged_in() ) {
378	$link = '<a href="' . esc_url( wp_login_url( $redirect ) ) . '">' . __( 'Log in' ) . '</a>';
379	} else {
380	$link = '<a href="' . esc_url( wp_logout_url( $redirect ) ) . '">' . __( 'Log out' ) . '</a>';
381	}
382
383	if ( $echo ) {
384	/**
385	* Filters the HTML output for the Log In/Log Out link.
386	*
387	* @since 1.5.0
388	*
389	* @param string $link The HTML link content.
390	*/
391	echo apply_filters( 'loginout', $link );
392	} else {
393	/** This filter is documented in wp-includes/general-template.php */
394	return apply_filters( 'loginout', $link );
395	}
396	}
397
398	/**
399	* Retrieves the logout URL.
400	*
401	* Returns the URL that allows the user to log out of the site.
402	*
403	* @since 2.7.0
404	*
405	* @param string $redirect Path to redirect to on logout.
406	* @return string The logout URL. Note: HTML-encoded via esc_html() in wp_nonce_url().
407	*/
408	function wp_logout_url( $redirect = '' ) {
409	$args = array();
410	if ( ! empty( $redirect ) ) {
411	$args['redirect_to'] = urlencode( $redirect );
412	}
413
414	$logout_url = add_query_arg( $args, site_url( 'wp-login.php?action=logout', 'login' ) );
415	$logout_url = wp_nonce_url( $logout_url, 'log-out' );
416
417	/**
418	* Filters the logout URL.
419	*
420	* @since 2.8.0
421	*
422	* @param string $logout_url The HTML-encoded logout URL.
423	* @param string $redirect Path to redirect to on logout.
424	*/
425	return apply_filters( 'logout_url', $logout_url, $redirect );
426	}
427
428	/**
429	* Retrieves the login URL.
430	*
431	* @since 2.7.0
432	*
433	* @param string $redirect Path to redirect to on log in.
434	* @param bool $force_reauth Whether to force reauthorization, even if a cookie is present.
435	* Default false.
436	* @return string The login URL. Not HTML-encoded.
437	*/
438	function wp_login_url( $redirect = '', $force_reauth = false ) {
439	$login_url = site_url( 'wp-login.php', 'login' );
440
441	if ( ! empty( $redirect ) ) {
442	$login_url = add_query_arg( 'redirect_to', urlencode( $redirect ), $login_url );
443	}
444
445	if ( $force_reauth ) {
446	$login_url = add_query_arg( 'reauth', '1', $login_url );
447	}
448
449	/**
450	* Filters the login URL.
451	*
452	* @since 2.8.0
453	* @since 4.2.0 The `$force_reauth` parameter was added.
454	*
455	* @param string $login_url The login URL. Not HTML-encoded.
456	* @param string $redirect The path to redirect to on login, if supplied.
457	* @param bool $force_reauth Whether to force reauthorization, even if a cookie is present.
458	*/
459	return apply_filters( 'login_url', $login_url, $redirect, $force_reauth );
460	}
461
462	/**
463	* Returns the URL that allows the user to register on the site.
464	*
465	* @since 3.6.0
466	*
467	* @return string User registration URL.
468	*/
469	function wp_registration_url() {
470	/**
471	* Filters the user registration URL.
472	*
473	* @since 3.6.0
474	*
475	* @param string $register The user registration URL.
476	*/
477	return apply_filters( 'register_url', site_url( 'wp-login.php?action=register', 'login' ) );
478	}
479
480	/**
481	* Provides a simple login form for use anywhere within WordPress.
482	*
483	* The login form HTML is echoed by default. Pass a false value for `$echo` to return it instead.
484	*
485	* @since 3.0.0
486	*
487	* @param array $args {
488	* Optional. Array of options to control the form output. Default empty array.
489	*
490	* @type bool $echo Whether to display the login form or return the form HTML code.
491	* Default true (echo).
492	* @type string $redirect URL to redirect to. Must be absolute, as in "https://example.com/mypage/".
493	* Default is to redirect back to the request URI.
494	* @type string $form_id ID attribute value for the form. Default 'loginform'.
495	* @type string $label_username Label for the username or email address field. Default 'Username or Email Address'.
496	* @type string $label_password Label for the password field. Default 'Password'.
497	* @type string $label_remember Label for the remember field. Default 'Remember Me'.
498	* @type string $label_log_in Label for the submit button. Default 'Log In'.
499	* @type string $id_username ID attribute value for the username field. Default 'user_login'.
500	* @type string $id_password ID attribute value for the password field. Default 'user_pass'.
501	* @type string $id_remember ID attribute value for the remember field. Default 'rememberme'.
502	* @type string $id_submit ID attribute value for the submit button. Default 'wp-submit'.
503	* @type bool $remember Whether to display the "rememberme" checkbox in the form.
504	* @type string $value_username Default value for the username field. Default empty.
505	* @type bool $value_remember Whether the "Remember Me" checkbox should be checked by default.
506	* Default false (unchecked).
507	*
508	* }
509	* @return void\|string Void if 'echo' argument is true, login form HTML if 'echo' is false.
510	*/
511	function wp_login_form( $args = array() ) {
512	$defaults = array(
513	'echo' => true,
514	// Default 'redirect' value takes the user back to the request URI.
515	'redirect' => ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'],
516	'form_id' => 'loginform',
517	'label_username' => __( 'Username or Email Address' ),
518	'label_password' => __( 'Password' ),
519	'label_remember' => __( 'Remember Me' ),
520	'label_log_in' => __( 'Log In' ),
521	'id_username' => 'user_login',
522	'id_password' => 'user_pass',
523	'id_remember' => 'rememberme',
524	'id_submit' => 'wp-submit',
525	'remember' => true,
526	'value_username' => '',
527	// Set 'value_remember' to true to default the "Remember me" checkbox to checked.
528	'value_remember' => false,
529	);
530
531	/**
532	* Filters the default login form output arguments.
533	*
534	* @since 3.0.0
535	*
536	* @see wp_login_form()
537	*
538	* @param array $defaults An array of default login form arguments.
539	*/
540	$args = wp_parse_args( $args, apply_filters( 'login_form_defaults', $defaults ) );
541
542	/**
543	* Filters content to display at the top of the login form.
544	*
545	* The filter evaluates just following the opening form tag element.
546	*
547	* @since 3.0.0
548	*
549	* @param string $content Content to display. Default empty.
550	* @param array $args Array of login form arguments.
551	*/
552	$login_form_top = apply_filters( 'login_form_top', '', $args );
553
554	/**
555	* Filters content to display in the middle of the login form.
556	*
557	* The filter evaluates just following the location where the 'login-password'
558	* field is displayed.
559	*
560	* @since 3.0.0
561	*
562	* @param string $content Content to display. Default empty.
563	* @param array $args Array of login form arguments.
564	*/
565	$login_form_middle = apply_filters( 'login_form_middle', '', $args );
566
567	/**
568	* Filters content to display at the bottom of the login form.
569	*
570	* The filter evaluates just preceding the closing form tag element.
571	*
572	* @since 3.0.0
573	*
574	* @param string $content Content to display. Default empty.
575	* @param array $args Array of login form arguments.
576	*/
577	$login_form_bottom = apply_filters( 'login_form_bottom', '', $args );
578
579	$form = '
580	<form name="' . $args['form_id'] . '" id="' . $args['form_id'] . '" action="' . esc_url( site_url( 'wp-login.php', 'login_post' ) ) . '" method="post">
581	' . $login_form_top . '
582	<p class="login-username">
583	<label for="' . esc_attr( $args['id_username'] ) . '">' . esc_html( $args['label_username'] ) . '</label>
584	<input type="text" name="log" id="' . esc_attr( $args['id_username'] ) . '" class="input" value="' . esc_attr( $args['value_username'] ) . '" size="20" />
585	</p>
586	<p class="login-password">
587	<label for="' . esc_attr( $args['id_password'] ) . '">' . esc_html( $args['label_password'] ) . '</label>
588	<input type="password" name="pwd" id="' . esc_attr( $args['id_password'] ) . '" class="input" value="" size="20" />
589	</p>
590	' . $login_form_middle . '
591	' . ( $args['remember'] ? '<p class="login-remember"><label><input name="rememberme" type="checkbox" id="' . esc_attr( $args['id_remember'] ) . '" value="forever"' . ( $args['value_remember'] ? ' checked="checked"' : '' ) . ' /> ' . esc_html( $args['label_remember'] ) . '</label></p>' : '' ) . '
592	<p class="login-submit">
593	<input type="submit" name="wp-submit" id="' . esc_attr( $args['id_submit'] ) . '" class="button button-primary" value="' . esc_attr( $args['label_log_in'] ) . '" />
594	<input type="hidden" name="redirect_to" value="' . esc_url( $args['redirect'] ) . '" />
595	</p>
596	' . $login_form_bottom . '
597	</form>';
598
599	if ( $args['echo'] ) {
600	echo $form;
601	} else {
602	return $form;
603	}
604	}
605
606	/**
607	* Returns the URL that allows the user to retrieve the lost password
608	*
609	* @since 2.8.0
610	*
611	* @param string $redirect Path to redirect to on login.
612	* @return string Lost password URL.
613	*/
614	function wp_lostpassword_url( $redirect = '' ) {
615	$args = array(
616	'action' => 'lostpassword',
617	);
618
619	if ( ! empty( $redirect ) ) {
620	$args['redirect_to'] = urlencode( $redirect );
621	}
622
623	if ( is_multisite() ) {
624	$blog_details = get_blog_details();
625	$wp_login_path = $blog_details->path . 'wp-login.php';
626	} else {
627	$wp_login_path = 'wp-login.php';
628	}
629
630	$lostpassword_url = add_query_arg( $args, network_site_url( $wp_login_path, 'login' ) );
631
632	/**
633	* Filters the Lost Password URL.
634	*
635	* @since 2.8.0
636	*
637	* @param string $lostpassword_url The lost password page URL.
638	* @param string $redirect The path to redirect to on login.
639	*/
640	return apply_filters( 'lostpassword_url', $lostpassword_url, $redirect );
641	}
642
643	/**
644	* Display the Registration or Admin link.
645	*
646	* Display a link which allows the user to navigate to the registration page if
647	* not logged in and registration is enabled or to the dashboard if logged in.
648	*
649	* @since 1.5.0
650	*
651	* @param string $before Text to output before the link. Default `<li>`.
652	* @param string $after Text to output after the link. Default `</li>`.
653	* @param bool $echo Default to echo and not return the link.
654	* @return void\|string Void if `$echo` argument is true, registration or admin link
655	* if `$echo` is false.
656	*/
657	function wp_register( $before = '<li>', $after = '</li>', $echo = true ) {
658	if ( ! is_user_logged_in() ) {
659	if ( get_option( 'users_can_register' ) ) {
660	$link = $before . '<a href="' . esc_url( wp_registration_url() ) . '">' . __( 'Register' ) . '</a>' . $after;
661	} else {
662	$link = '';
663	}
664	} elseif ( current_user_can( 'read' ) ) {
665	$link = $before . '<a href="' . admin_url() . '">' . __( 'Site Admin' ) . '</a>' . $after;
666	} else {
667	$link = '';
668	}
669
670	/**
671	* Filters the HTML link to the Registration or Admin page.
672	*
673	* Users are sent to the admin page if logged-in, or the registration page
674	* if enabled and logged-out.
675	*
676	* @since 1.5.0
677	*
678	* @param string $link The HTML code for the link to the Registration or Admin page.
679	*/
680	$link = apply_filters( 'register', $link );
681
682	if ( $echo ) {
683	echo $link;
684	} else {
685	return $link;
686	}
687	}
688
689	/**
690	* Theme container function for the 'wp_meta' action.
691	*
692	* The {@see 'wp_meta'} action can have several purposes, depending on how you use it,
693	* but one purpose might have been to allow for theme switching.
694	*
695	* @since 1.5.0
696	*
697	* @link https://core.trac.wordpress.org/ticket/1458 Explanation of 'wp_meta' action.
698	*/
699	function wp_meta() {
700	/**
701	* Fires before displaying echoed content in the sidebar.
702	*
703	* @since 1.5.0
704	*/
705	do_action( 'wp_meta' );
706	}
707
708	/**
709	* Displays information about the current site.
710	*
711	* @since 0.71
712	*
713	* @see get_bloginfo() For possible `$show` values
714	*
715	* @param string $show Optional. Site information to display. Default empty.
716	*/
717	function bloginfo( $show = '' ) {
718	echo get_bloginfo( $show, 'display' );
719	}
720
721	/**
722	* Retrieves information about the current site.
723	*
724	* Possible values for `$show` include:
725	*
726	* - 'name' - Site title (set in Settings > General)
727	* - 'description' - Site tagline (set in Settings > General)
728	* - 'wpurl' - The WordPress address (URL) (set in Settings > General)
729	* - 'url' - The Site address (URL) (set in Settings > General)
730	* - 'admin_email' - Admin email (set in Settings > General)
731	* - 'charset' - The "Encoding for pages and feeds" (set in Settings > Reading)
732	* - 'version' - The current WordPress version
733	* - 'html_type' - The content-type (default: "text/html"). Themes and plugins
734	* can override the default value using the {@see 'pre_option_html_type'} filter
735	* - 'text_direction' - The text direction determined by the site's language. is_rtl()
736	* should be used instead
737	* - 'language' - Language code for the current site
738	* - 'stylesheet_url' - URL to the stylesheet for the active theme. An active child theme
739	* will take precedence over this value
740	* - 'stylesheet_directory' - Directory path for the active theme. An active child theme
741	* will take precedence over this value
742	* - 'template_url' / 'template_directory' - URL of the active theme's directory. An active
743	* child theme will NOT take precedence over this value
744	* - 'pingback_url' - The pingback XML-RPC file URL (xmlrpc.php)
745	* - 'atom_url' - The Atom feed URL (/feed/atom)
746	* - 'rdf_url' - The RDF/RSS 1.0 feed URL (/feed/rdf)
747	* - 'rss_url' - The RSS 0.92 feed URL (/feed/rss)
748	* - 'rss2_url' - The RSS 2.0 feed URL (/feed)
749	* - 'comments_atom_url' - The comments Atom feed URL (/comments/feed)
750	* - 'comments_rss2_url' - The comments RSS 2.0 feed URL (/comments/feed)
751	*
752	* Some `$show` values are deprecated and will be removed in future versions.
753	* These options will trigger the _deprecated_argument() function.
754	*
755	* Deprecated arguments include:
756	*
757	* - 'siteurl' - Use 'url' instead
758	* - 'home' - Use 'url' instead
759	*
760	* @since 0.71
761	*
762	* @global string $wp_version The WordPress version string.
763	*
764	* @param string $show Optional. Site info to retrieve. Default empty (site name).
765	* @param string $filter Optional. How to filter what is retrieved. Default 'raw'.
766	* @return string Mostly string values, might be empty.
767	*/
768	function get_bloginfo( $show = '', $filter = 'raw' ) {
769	switch ( $show ) {
770	case 'home': // Deprecated.
771	case 'siteurl': // Deprecated.
772	_deprecated_argument(
773	__FUNCTION__,
774	'2.2.0',
775	sprintf(
776	/* translators: 1: 'siteurl'/'home' argument, 2: bloginfo() function name, 3: 'url' argument. */
777	__( 'The %1$s option is deprecated for the family of %2$s functions. Use the %3$s option instead.' ),
778	'<code>' . $show . '</code>',
779	'<code>bloginfo()</code>',
780	'<code>url</code>'
781	)
782	);
783	// Intentional fall-through to be handled by the 'url' case.
784	case 'url':
785	$output = home_url();
786	break;
787	case 'wpurl':
788	$output = site_url();
789	break;
790	case 'description':
791	$output = get_option( 'blogdescription' );
792	break;
793	case 'rdf_url':
794	$output = get_feed_link( 'rdf' );
795	break;
796	case 'rss_url':
797	$output = get_feed_link( 'rss' );
798	break;
799	case 'rss2_url':
800	$output = get_feed_link( 'rss2' );
801	break;
802	case 'atom_url':
803	$output = get_feed_link( 'atom' );
804	break;
805	case 'comments_atom_url':
806	$output = get_feed_link( 'comments_atom' );
807	break;
808	case 'comments_rss2_url':
809	$output = get_feed_link( 'comments_rss2' );
810	break;
811	case 'pingback_url':
812	$output = site_url( 'xmlrpc.php' );
813	break;
814	case 'stylesheet_url':
815	$output = get_stylesheet_uri();
816	break;
817	case 'stylesheet_directory':
818	$output = get_stylesheet_directory_uri();
819	break;
820	case 'template_directory':
821	case 'template_url':
822	$output = get_template_directory_uri();
823	break;
824	case 'admin_email':
825	$output = get_option( 'admin_email' );
826	break;
827	case 'charset':
828	$output = get_option( 'blog_charset' );
829	if ( '' === $output ) {
830	$output = 'UTF-8';
831	}
832	break;
833	case 'html_type':
834	$output = get_option( 'html_type' );
835	break;
836	case 'version':
837	global $wp_version;
838	$output = $wp_version;
839	break;
840	case 'language':
841	/*
842	* translators: Translate this to the correct language tag for your locale,
843	* see https://www.w3.org/International/articles/language-tags/ for reference.
844	* Do not translate into your own language.
845	*/
846	$output = __( 'html_lang_attribute' );
847	if ( 'html_lang_attribute' === $output \|\| preg_match( '/[^a-zA-Z0-9-]/', $output ) ) {
848	$output = determine_locale();
849	$output = str_replace( '_', '-', $output );
850	}
851	break;
852	case 'text_direction':
853	_deprecated_argument(
854	__FUNCTION__,
855	'2.2.0',
856	sprintf(
857	/* translators: 1: 'text_direction' argument, 2: bloginfo() function name, 3: is_rtl() function name. */
858	__( 'The %1$s option is deprecated for the family of %2$s functions. Use the %3$s function instead.' ),
859	'<code>' . $show . '</code>',
860	'<code>bloginfo()</code>',
861	'<code>is_rtl()</code>'
862	)
863	);
864	if ( function_exists( 'is_rtl' ) ) {
865	$output = is_rtl() ? 'rtl' : 'ltr';
866	} else {
867	$output = 'ltr';
868	}
869	break;
870	case 'name':
871	default:
872	$output = get_option( 'blogname' );
873	break;
874	}
875
876	$url = true;
877	if ( strpos( $show, 'url' ) === false &&
878	strpos( $show, 'directory' ) === false &&
879	strpos( $show, 'home' ) === false ) {
880	$url = false;
881	}
882
883	if ( 'display' === $filter ) {
884	if ( $url ) {
885	/**
886	* Filters the URL returned by get_bloginfo().
887	*
888	* @since 2.0.5
889	*
890	* @param string $output The URL returned by bloginfo().
891	* @param string $show Type of information requested.
892	*/
893	$output = apply_filters( 'bloginfo_url', $output, $show );
894	} else {
895	/**
896	* Filters the site information returned by get_bloginfo().
897	*
898	* @since 0.71
899	*
900	* @param mixed $output The requested non-URL site information.
901	* @param string $show Type of information requested.
902	*/
903	$output = apply_filters( 'bloginfo', $output, $show );
904	}
905	}
906
907	return $output;
908	}
909
910	/**
911	* Returns the Site Icon URL.
912	*
913	* @since 4.3.0
914	*
915	* @param int $size Optional. Size of the site icon. Default 512 (pixels).
916	* @param string $url Optional. Fallback url if no site icon is found. Default empty.
917	* @param int $blog_id Optional. ID of the blog to get the site icon for. Default current blog.
918	* @return string Site Icon URL.
919	*/
920	function get_site_icon_url( $size = 512, $url = '', $blog_id = 0 ) {
921	$switched_blog = false;
922
923	if ( is_multisite() && ! empty( $blog_id ) && get_current_blog_id() !== (int) $blog_id ) {
924	switch_to_blog( $blog_id );
925	$switched_blog = true;
926	}
927
928	$site_icon_id = get_option( 'site_icon' );
929
930	if ( $site_icon_id ) {
931	if ( $size >= 512 ) {
932	$size_data = 'full';
933	} else {
934	$size_data = array( $size, $size );
935	}
936	$url = wp_get_attachment_image_url( $site_icon_id, $size_data );
937	}
938
939	if ( $switched_blog ) {
940	restore_current_blog();
941	}
942
943	/**
944	* Filters the site icon URL.
945	*
946	* @since 4.4.0
947	*
948	* @param string $url Site icon URL.
949	* @param int $size Size of the site icon.
950	* @param int $blog_id ID of the blog to get the site icon for.
951	*/
952	return apply_filters( 'get_site_icon_url', $url, $size, $blog_id );
953	}
954
955	/**
956	* Displays the Site Icon URL.
957	*
958	* @since 4.3.0
959	*
960	* @param int $size Optional. Size of the site icon. Default 512 (pixels).
961	* @param string $url Optional. Fallback url if no site icon is found. Default empty.
962	* @param int $blog_id Optional. ID of the blog to get the site icon for. Default current blog.
963	*/
964	function site_icon_url( $size = 512, $url = '', $blog_id = 0 ) {
965	echo esc_url( get_site_icon_url( $size, $url, $blog_id ) );
966	}
967
968	/**
969	* Whether the site has a Site Icon.
970	*
971	* @since 4.3.0
972	*
973	* @param int $blog_id Optional. ID of the blog in question. Default current blog.
974	* @return bool Whether the site has a site icon or not.
975	*/
976	function has_site_icon( $blog_id = 0 ) {
977	return (bool) get_site_icon_url( 512, '', $blog_id );
978	}
979
980	/**
981	* Determines whether the site has a custom logo.
982	*
983	* @since 4.5.0
984	*
985	* @param int $blog_id Optional. ID of the blog in question. Default is the ID of the current blog.
986	* @return bool Whether the site has a custom logo or not.
987	*/
988	function has_custom_logo( $blog_id = 0 ) {
989	$switched_blog = false;
990
991	if ( is_multisite() && ! empty( $blog_id ) && get_current_blog_id() !== (int) $blog_id ) {
992	switch_to_blog( $blog_id );
993	$switched_blog = true;
994	}
995
996	$custom_logo_id = get_theme_mod( 'custom_logo' );
997
998	if ( $switched_blog ) {
999	restore_current_blog();
1000	}
1001
1002	return (bool) $custom_logo_id;
1003	}
1004
1005	/**
1006	* Returns a custom logo, linked to home unless the theme supports removing the link on the home page.
1007	*
1008	* @since 4.5.0
1009	* @since 5.5.0 Added option to remove the link on the home page with `unlink-homepage-logo` theme support
1010	* for the `custom-logo` theme feature.
1011	* @since 5.5.1 Disabled lazy-loading by default.
1012	*
1013	* @param int $blog_id Optional. ID of the blog in question. Default is the ID of the current blog.
1014	* @return string Custom logo markup.
1015	*/
1016	function get_custom_logo( $blog_id = 0 ) {
1017	$html = '';
1018	$switched_blog = false;
1019
1020	if ( is_multisite() && ! empty( $blog_id ) && get_current_blog_id() !== (int) $blog_id ) {
1021	switch_to_blog( $blog_id );
1022	$switched_blog = true;
1023	}
1024
1025	$custom_logo_id = get_theme_mod( 'custom_logo' );
1026
1027	// We have a logo. Logo is go.
1028	if ( $custom_logo_id ) {
1029	$custom_logo_attr = array(
1030	'class' => 'custom-logo',
1031	'loading' => false,
1032	);
1033
1034	$unlink_homepage_logo = (bool) get_theme_support( 'custom-logo', 'unlink-homepage-logo' );
1035
1036	if ( $unlink_homepage_logo && is_front_page() && ! is_paged() ) {
1037	/*
1038	* If on the home page, set the logo alt attribute to an empty string,
1039	* as the image is decorative and doesn't need its purpose to be described.
1040	*/
1041	$custom_logo_attr['alt'] = '';
1042	} else {
1043	/*
1044	* If the logo alt attribute is empty, get the site title and explicitly pass it
1045	* to the attributes used by wp_get_attachment_image().
1046	*/
1047	$image_alt = get_post_meta( $custom_logo_id, '_wp_attachment_image_alt', true );
1048	if ( empty( $image_alt ) ) {
1049	$custom_logo_attr['alt'] = get_bloginfo( 'name', 'display' );
1050	}
1051	}
1052
1053	/**
1054	* Filters the list of custom logo image attributes.
1055	*
1056	* @since 5.5.0
1057	*
1058	* @param array $custom_logo_attr Custom logo image attributes.
1059	* @param int $custom_logo_id Custom logo attachment ID.
1060	* @param int $blog_id ID of the blog to get the custom logo for.
1061	*/
1062	$custom_logo_attr = apply_filters( 'get_custom_logo_image_attributes', $custom_logo_attr, $custom_logo_id, $blog_id );
1063
1064	/*
1065	* If the alt attribute is not empty, there's no need to explicitly pass it
1066	* because wp_get_attachment_image() already adds the alt attribute.
1067	*/
1068	$image = wp_get_attachment_image( $custom_logo_id, 'full', false, $custom_logo_attr );
1069
1070	if ( $unlink_homepage_logo && is_front_page() && ! is_paged() ) {
1071	// If on the home page, don't link the logo to home.
1072	$html = sprintf(
1073	'<span class="custom-logo-link">%1$s</span>',
1074	$image
1075	);
1076	} else {
1077	$aria_current = is_front_page() && ! is_paged() ? ' aria-current="page"' : '';
1078
1079	$html = sprintf(
1080	'<a href="%1$s" class="custom-logo-link" rel="home"%2$s>%3$s</a>',
1081	esc_url( home_url( '/' ) ),
1082	$aria_current,
1083	$image
1084	);
1085	}
1086	} elseif ( is_customize_preview() ) {
1087	// If no logo is set but we're in the Customizer, leave a placeholder (needed for the live preview).
1088	$html = sprintf(
1089	'<a href="%1$s" class="custom-logo-link" style="display:none;"><img class="custom-logo" alt="" /></a>',
1090	esc_url( home_url( '/' ) )
1091	);
1092	}
1093
1094	if ( $switched_blog ) {
1095	restore_current_blog();
1096	}
1097
1098	/**
1099	* Filters the custom logo output.
1100	*
1101	* @since 4.5.0
1102	* @since 4.6.0 Added the `$blog_id` parameter.
1103	*
1104	* @param string $html Custom logo HTML output.
1105	* @param int $blog_id ID of the blog to get the custom logo for.
1106	*/
1107	return apply_filters( 'get_custom_logo', $html, $blog_id );
1108	}
1109
1110	/**
1111	* Displays a custom logo, linked to home unless the theme supports removing the link on the home page.
1112	*
1113	* @since 4.5.0
1114	*
1115	* @param int $blog_id Optional. ID of the blog in question. Default is the ID of the current blog.
1116	*/
1117	function the_custom_logo( $blog_id = 0 ) {
1118	echo get_custom_logo( $blog_id );
1119	}
1120
1121	/**
1122	* Returns document title for the current page.
1123	*
1124	* @since 4.4.0
1125	*
1126	* @global int $page Page number of a single post.
1127	* @global int $paged Page number of a list of posts.
1128	*
1129	* @return string Tag with the document title.
1130	*/
1131	function wp_get_document_title() {
1132
1133	/**
1134	* Filters the document title before it is generated.
1135	*
1136	* Passing a non-empty value will short-circuit wp_get_document_title(),
1137	* returning that value instead.
1138	*
1139	* @since 4.4.0
1140	*
1141	* @param string $title The document title. Default empty string.
1142	*/
1143	$title = apply_filters( 'pre_get_document_title', '' );
1144	if ( ! empty( $title ) ) {
1145	return $title;
1146	}
1147
1148	global $page, $paged;
1149
1150	$title = array(
1151	'title' => '',
1152	);
1153
1154	// If it's a 404 page, use a "Page not found" title.
1155	if ( is_404() ) {
1156	$title['title'] = __( 'Page not found' );
1157
1158	// If it's a search, use a dynamic search results title.
1159	} elseif ( is_search() ) {
1160	/* translators: %s: Search query. */
1161	$title['title'] = sprintf( __( 'Search Results for “%s”' ), get_search_query() );
1162
1163	// If on the front page, use the site title.
1164	} elseif ( is_front_page() ) {
1165	$title['title'] = get_bloginfo( 'name', 'display' );
1166
1167	// If on a post type archive, use the post type archive title.
1168	} elseif ( is_post_type_archive() ) {
1169	$title['title'] = post_type_archive_title( '', false );
1170
1171	// If on a taxonomy archive, use the term title.
1172	} elseif ( is_tax() ) {
1173	$title['title'] = single_term_title( '', false );
1174
1175	/*
1176	* If we're on the blog page that is not the homepage
1177	* or a single post of any post type, use the post title.
1178	*/
1179	} elseif ( is_home() \|\| is_singular() ) {
1180	$title['title'] = single_post_title( '', false );
1181
1182	// If on a category or tag archive, use the term title.
1183	} elseif ( is_category() \|\| is_tag() ) {
1184	$title['title'] = single_term_title( '', false );
1185
1186	// If on an author archive, use the author's display name.
1187	} elseif ( is_author() && get_queried_object() ) {
1188	$author = get_queried_object();
1189	$title['title'] = $author->display_name;
1190
1191	// If it's a date archive, use the date as the title.
1192	} elseif ( is_year() ) {
1193	$title['title'] = get_the_date( _x( 'Y', 'yearly archives date format' ) );
1194
1195	} elseif ( is_month() ) {
1196	$title['title'] = get_the_date( _x( 'F Y', 'monthly archives date format' ) );
1197
1198	} elseif ( is_day() ) {
1199	$title['title'] = get_the_date();
1200	}
1201
1202	// Add a page number if necessary.
1203	if ( ( $paged >= 2 \|\| $page >= 2 ) && ! is_404() ) {
1204	/* translators: %s: Page number. */
1205	$title['page'] = sprintf( __( 'Page %s' ), max( $paged, $page ) );
1206	}
1207
1208	// Append the description or site title to give context.
1209	if ( is_front_page() ) {
1210	$title['tagline'] = get_bloginfo( 'description', 'display' );
1211	} else {
1212	$title['site'] = get_bloginfo( 'name', 'display' );
1213	}
1214
1215	/**
1216	* Filters the separator for the document title.
1217	*
1218	* @since 4.4.0
1219	*
1220	* @param string $sep Document title separator. Default '-'.
1221	*/
1222	$sep = apply_filters( 'document_title_separator', '-' );
1223
1224	/**
1225	* Filters the parts of the document title.
1226	*
1227	* @since 4.4.0
1228	*
1229	* @param array $title {
1230	* The document title parts.
1231	*
1232	* @type string $title Title of the viewed page.
1233	* @type string $page Optional. Page number if paginated.
1234	* @type string $tagline Optional. Site description when on home page.
1235	* @type string $site Optional. Site title when not on home page.
1236	* }
1237	*/
1238	$title = apply_filters( 'document_title_parts', $title );
1239
1240	$title = implode( " $sep ", array_filter( $title ) );
1241
1242	/**
1243	* Filters the document title.
1244	*
1245	* @since 5.8.0
1246	*
1247	* @param string $title Document title.
1248	*/
1249	$title = apply_filters( 'document_title', $title );
1250
1251	return $title;
1252	}
1253
1254	/**
1255	* Displays title tag with content.
1256	*
1257	* @ignore
1258	* @since 4.1.0
1259	* @since 4.4.0 Improved title output replaced `wp_title()`.
1260	* @access private
1261	*/
1262	function _wp_render_title_tag() {
1263	if ( ! current_theme_supports( 'title-tag' ) ) {
1264	return;
1265	}
1266
1267	echo '<title>' . wp_get_document_title() . '</title>' . "\n";
1268	}
1269
1270	/**
1271	* Display or retrieve page title for all areas of blog.
1272	*
1273	* By default, the page title will display the separator before the page title,
1274	* so that the blog title will be before the page title. This is not good for
1275	* title display, since the blog title shows up on most tabs and not what is
1276	* important, which is the page that the user is looking at.
1277	*
1278	* There are also SEO benefits to having the blog title after or to the 'right'
1279	* of the page title. However, it is mostly common sense to have the blog title
1280	* to the right with most browsers supporting tabs. You can achieve this by
1281	* using the seplocation parameter and setting the value to 'right'. This change
1282	* was introduced around 2.5.0, in case backward compatibility of themes is
1283	* important.
1284	*
1285	* @since 1.0.0
1286	*
1287	* @global WP_Locale $wp_locale WordPress date and time locale object.
1288	*
1289	* @param string $sep Optional. How to separate the various items within the page title.
1290	* Default '»'.
1291	* @param bool $display Optional. Whether to display or retrieve title. Default true.
1292	* @param string $seplocation Optional. Location of the separator ('left' or 'right').
1293	* @return string\|null String on retrieve, null when displaying.
1294	*/
1295	function wp_title( $sep = '»', $display = true, $seplocation = '' ) {
1296	global $wp_locale;
1297
1298	$m = get_query_var( 'm' );
1299	$year = get_query_var( 'year' );
1300	$monthnum = get_query_var( 'monthnum' );
1301	$day = get_query_var( 'day' );
1302	$search = get_query_var( 's' );
1303	$title = '';
1304
1305	$t_sep = '%WP_TITLE_SEP%'; // Temporary separator, for accurate flipping, if necessary.
1306
1307	// If there is a post.
1308	if ( is_single() \|\| ( is_home() && ! is_front_page() ) \|\| ( is_page() && ! is_front_page() ) ) {
1309	$title = single_post_title( '', false );
1310	}
1311
1312	// If there's a post type archive.
1313	if ( is_post_type_archive() ) {
1314	$post_type = get_query_var( 'post_type' );
1315	if ( is_array( $post_type ) ) {
1316	$post_type = reset( $post_type );
1317	}
1318	$post_type_object = get_post_type_object( $post_type );
1319	if ( ! $post_type_object->has_archive ) {
1320	$title = post_type_archive_title( '', false );
1321	}
1322	}
1323
1324	// If there's a category or tag.
1325	if ( is_category() \|\| is_tag() ) {
1326	$title = single_term_title( '', false );
1327	}
1328
1329	// If there's a taxonomy.
1330	if ( is_tax() ) {
1331	$term = get_queried_object();
1332	if ( $term ) {
1333	$tax = get_taxonomy( $term->taxonomy );
1334	$title = single_term_title( $tax->labels->name . $t_sep, false );
1335	}
1336	}
1337
1338	// If there's an author.
1339	if ( is_author() && ! is_post_type_archive() ) {
1340	$author = get_queried_object();
1341	if ( $author ) {
1342	$title = $author->display_name;
1343	}
1344	}
1345
1346	// Post type archives with has_archive should override terms.
1347	if ( is_post_type_archive() && $post_type_object->has_archive ) {
1348	$title = post_type_archive_title( '', false );
1349	}
1350
1351	// If there's a month.
1352	if ( is_archive() && ! empty( $m ) ) {
1353	$my_year = substr( $m, 0, 4 );
1354	$my_month = $wp_locale->get_month( substr( $m, 4, 2 ) );
1355	$my_day = (int) substr( $m, 6, 2 );
1356	$title = $my_year . ( $my_month ? $t_sep . $my_month : '' ) . ( $my_day ? $t_sep . $my_day : '' );
1357	}
1358
1359	// If there's a year.
1360	if ( is_archive() && ! empty( $year ) ) {
1361	$title = $year;
1362	if ( ! empty( $monthnum ) ) {
1363	$title .= $t_sep . $wp_locale->get_month( $monthnum );
1364	}
1365	if ( ! empty( $day ) ) {
1366	$title .= $t_sep . zeroise( $day, 2 );
1367	}
1368	}
1369
1370	// If it's a search.
1371	if ( is_search() ) {
1372	/* translators: 1: Separator, 2: Search query. */
1373	$title = sprintf( __( 'Search Results %1$s %2$s' ), $t_sep, strip_tags( $search ) );
1374	}
1375
1376	// If it's a 404 page.
1377	if ( is_404() ) {
1378	$title = __( 'Page not found' );
1379	}
1380
1381	$prefix = '';
1382	if ( ! empty( $title ) ) {
1383	$prefix = " $sep ";
1384	}
1385
1386	/**
1387	* Filters the parts of the page title.
1388	*
1389	* @since 4.0.0
1390	*
1391	* @param string[] $title_array Array of parts of the page title.
1392	*/
1393	$title_array = apply_filters( 'wp_title_parts', explode( $t_sep, $title ) );
1394
1395	// Determines position of the separator and direction of the breadcrumb.
1396	if ( 'right' === $seplocation ) { // Separator on right, so reverse the order.
1397	$title_array = array_reverse( $title_array );
1398	$title = implode( " $sep ", $title_array ) . $prefix;
1399	} else {
1400	$title = $prefix . implode( " $sep ", $title_array );
1401	}
1402
1403	/**
1404	* Filters the text of the page title.
1405	*
1406	* @since 2.0.0
1407	*
1408	* @param string $title Page title.
1409	* @param string $sep Title separator.
1410	* @param string $seplocation Location of the separator ('left' or 'right').
1411	*/
1412	$title = apply_filters( 'wp_title', $title, $sep, $seplocation );
1413
1414	// Send it out.
1415	if ( $display ) {
1416	echo $title;
1417	} else {
1418	return $title;
1419	}
1420	}
1421
1422	/**
1423	* Display or retrieve page title for post.
1424	*
1425	* This is optimized for single.php template file for displaying the post title.
1426	*
1427	* It does not support placing the separator after the title, but by leaving the
1428	* prefix parameter empty, you can set the title separator manually. The prefix
1429	* does not automatically place a space between the prefix, so if there should
1430	* be a space, the parameter value will need to have it at the end.
1431	*
1432	* @since 0.71
1433	*
1434	* @param string $prefix Optional. What to display before the title.
1435	* @param bool $display Optional. Whether to display or retrieve title. Default true.
1436	* @return string\|void Title when retrieving.
1437	*/
1438	function single_post_title( $prefix = '', $display = true ) {
1439	$_post = get_queried_object();
1440
1441	if ( ! isset( $_post->post_title ) ) {
1442	return;
1443	}
1444
1445	/**
1446	* Filters the page title for a single post.
1447	*
1448	* @since 0.71
1449	*
1450	* @param string $_post_title The single post page title.
1451	* @param WP_Post $_post The current post.
1452	*/
1453	$title = apply_filters( 'single_post_title', $_post->post_title, $_post );
1454	if ( $display ) {
1455	echo $prefix . $title;
1456	} else {
1457	return $prefix . $title;
1458	}
1459	}
1460
1461	/**
1462	* Display or retrieve title for a post type archive.
1463	*
1464	* This is optimized for archive.php and archive-{$post_type}.php template files
1465	* for displaying the title of the post type.
1466	*
1467	* @since 3.1.0
1468	*
1469	* @param string $prefix Optional. What to display before the title.
1470	* @param bool $display Optional. Whether to display or retrieve title. Default true.
1471	* @return string\|void Title when retrieving, null when displaying or failure.
1472	*/
1473	function post_type_archive_title( $prefix = '', $display = true ) {
1474	if ( ! is_post_type_archive() ) {
1475	return;
1476	}
1477
1478	$post_type = get_query_var( 'post_type' );
1479	if ( is_array( $post_type ) ) {
1480	$post_type = reset( $post_type );
1481	}
1482
1483	$post_type_obj = get_post_type_object( $post_type );
1484
1485	/**
1486	* Filters the post type archive title.
1487	*
1488	* @since 3.1.0
1489	*
1490	* @param string $post_type_name Post type 'name' label.
1491	* @param string $post_type Post type.
1492	*/
1493	$title = apply_filters( 'post_type_archive_title', $post_type_obj->labels->name, $post_type );
1494
1495	if ( $display ) {
1496	echo $prefix . $title;
1497	} else {
1498	return $prefix . $title;
1499	}
1500	}
1501
1502	/**
1503	* Display or retrieve page title for category archive.
1504	*
1505	* Useful for category template files for displaying the category page title.
1506	* The prefix does not automatically place a space between the prefix, so if
1507	* there should be a space, the parameter value will need to have it at the end.
1508	*
1509	* @since 0.71
1510	*
1511	* @param string $prefix Optional. What to display before the title.
1512	* @param bool $display Optional. Whether to display or retrieve title. Default true.
1513	* @return string\|void Title when retrieving.
1514	*/
1515	function single_cat_title( $prefix = '', $display = true ) {
1516	return single_term_title( $prefix, $display );
1517	}
1518
1519	/**
1520	* Display or retrieve page title for tag post archive.
1521	*
1522	* Useful for tag template files for displaying the tag page title. The prefix
1523	* does not automatically place a space between the prefix, so if there should
1524	* be a space, the parameter value will need to have it at the end.
1525	*
1526	* @since 2.3.0
1527	*
1528	* @param string $prefix Optional. What to display before the title.
1529	* @param bool $display Optional. Whether to display or retrieve title. Default true.
1530	* @return string\|void Title when retrieving.
1531	*/
1532	function single_tag_title( $prefix = '', $display = true ) {
1533	return single_term_title( $prefix, $display );
1534	}
1535
1536	/**
1537	* Display or retrieve page title for taxonomy term archive.
1538	*
1539	* Useful for taxonomy term template files for displaying the taxonomy term page title.
1540	* The prefix does not automatically place a space between the prefix, so if there should
1541	* be a space, the parameter value will need to have it at the end.
1542	*
1543	* @since 3.1.0
1544	*
1545	* @param string $prefix Optional. What to display before the title.
1546	* @param bool $display Optional. Whether to display or retrieve title. Default true.
1547	* @return string\|void Title when retrieving.
1548	*/
1549	function single_term_title( $prefix = '', $display = true ) {
1550	$term = get_queried_object();
1551
1552	if ( ! $term ) {
1553	return;
1554	}
1555
1556	if ( is_category() ) {
1557	/**
1558	* Filters the category archive page title.
1559	*
1560	* @since 2.0.10
1561	*
1562	* @param string $term_name Category name for archive being displayed.
1563	*/
1564	$term_name = apply_filters( 'single_cat_title', $term->name );
1565	} elseif ( is_tag() ) {
1566	/**
1567	* Filters the tag archive page title.
1568	*
1569	* @since 2.3.0
1570	*
1571	* @param string $term_name Tag name for archive being displayed.
1572	*/
1573	$term_name = apply_filters( 'single_tag_title', $term->name );
1574	} elseif ( is_tax() ) {
1575	/**
1576	* Filters the custom taxonomy archive page title.
1577	*
1578	* @since 3.1.0
1579	*
1580	* @param string $term_name Term name for archive being displayed.
1581	*/
1582	$term_name = apply_filters( 'single_term_title', $term->name );
1583	} else {
1584	return;
1585	}
1586
1587	if ( empty( $term_name ) ) {
1588	return;
1589	}
1590
1591	if ( $display ) {
1592	echo $prefix . $term_name;
1593	} else {
1594	return $prefix . $term_name;
1595	}
1596	}
1597
1598	/**
1599	* Display or retrieve page title for post archive based on date.
1600	*
1601	* Useful for when the template only needs to display the month and year,
1602	* if either are available. The prefix does not automatically place a space
1603	* between the prefix, so if there should be a space, the parameter value
1604	* will need to have it at the end.
1605	*
1606	* @since 0.71
1607	*
1608	* @global WP_Locale $wp_locale WordPress date and time locale object.
1609	*
1610	* @param string $prefix Optional. What to display before the title.
1611	* @param bool $display Optional. Whether to display or retrieve title. Default true.
1612	* @return string\|void Title when retrieving.
1613	*/
1614	function single_month_title( $prefix = '', $display = true ) {
1615	global $wp_locale;
1616
1617	$m = get_query_var( 'm' );
1618	$year = get_query_var( 'year' );
1619	$monthnum = get_query_var( 'monthnum' );
1620
1621	if ( ! empty( $monthnum ) && ! empty( $year ) ) {
1622	$my_year = $year;
1623	$my_month = $wp_locale->get_month( $monthnum );
1624	} elseif ( ! empty( $m ) ) {
1625	$my_year = substr( $m, 0, 4 );
1626	$my_month = $wp_locale->get_month( substr( $m, 4, 2 ) );
1627	}
1628
1629	if ( empty( $my_month ) ) {
1630	return false;
1631	}
1632
1633	$result = $prefix . $my_month . $prefix . $my_year;
1634
1635	if ( ! $display ) {
1636	return $result;
1637	}
1638	echo $result;
1639	}
1640
1641	/**
1642	* Display the archive title based on the queried object.
1643	*
1644	* @since 4.1.0
1645	*
1646	* @see get_the_archive_title()
1647	*
1648	* @param string $before Optional. Content to prepend to the title. Default empty.
1649	* @param string $after Optional. Content to append to the title. Default empty.
1650	*/
1651	function the_archive_title( $before = '', $after = '' ) {
1652	$title = get_the_archive_title();
1653
1654	if ( ! empty( $title ) ) {
1655	echo $before . $title . $after;
1656	}
1657	}
1658
1659	/**
1660	* Retrieve the archive title based on the queried object.
1661	*
1662	* @since 4.1.0
1663	* @since 5.5.0 The title part is wrapped in a `<span>` element.
1664	*
1665	* @return string Archive title.
1666	*/
1667	function get_the_archive_title() {
1668	$title = __( 'Archives' );
1669	$prefix = '';
1670
1671	if ( is_category() ) {
1672	$title = single_cat_title( '', false );
1673	$prefix = _x( 'Category:', 'category archive title prefix' );
1674	} elseif ( is_tag() ) {
1675	$title = single_tag_title( '', false );
1676	$prefix = _x( 'Tag:', 'tag archive title prefix' );
1677	} elseif ( is_author() ) {
1678	$title = get_the_author();
1679	$prefix = _x( 'Author:', 'author archive title prefix' );
1680	} elseif ( is_year() ) {
1681	$title = get_the_date( _x( 'Y', 'yearly archives date format' ) );
1682	$prefix = _x( 'Year:', 'date archive title prefix' );
1683	} elseif ( is_month() ) {
1684	$title = get_the_date( _x( 'F Y', 'monthly archives date format' ) );
1685	$prefix = _x( 'Month:', 'date archive title prefix' );
1686	} elseif ( is_day() ) {
1687	$title = get_the_date( _x( 'F j, Y', 'daily archives date format' ) );
1688	$prefix = _x( 'Day:', 'date archive title prefix' );
1689	} elseif ( is_tax( 'post_format' ) ) {
1690	if ( is_tax( 'post_format', 'post-format-aside' ) ) {
1691	$title = _x( 'Asides', 'post format archive title' );
1692	} elseif ( is_tax( 'post_format', 'post-format-gallery' ) ) {
1693	$title = _x( 'Galleries', 'post format archive title' );
1694	} elseif ( is_tax( 'post_format', 'post-format-image' ) ) {
1695	$title = _x( 'Images', 'post format archive title' );
1696	} elseif ( is_tax( 'post_format', 'post-format-video' ) ) {
1697	$title = _x( 'Videos', 'post format archive title' );
1698	} elseif ( is_tax( 'post_format', 'post-format-quote' ) ) {
1699	$title = _x( 'Quotes', 'post format archive title' );
1700	} elseif ( is_tax( 'post_format', 'post-format-link' ) ) {
1701	$title = _x( 'Links', 'post format archive title' );
1702	} elseif ( is_tax( 'post_format', 'post-format-status' ) ) {
1703	$title = _x( 'Statuses', 'post format archive title' );
1704	} elseif ( is_tax( 'post_format', 'post-format-audio' ) ) {
1705	$title = _x( 'Audio', 'post format archive title' );
1706	} elseif ( is_tax( 'post_format', 'post-format-chat' ) ) {
1707	$title = _x( 'Chats', 'post format archive title' );
1708	}
1709	} elseif ( is_post_type_archive() ) {
1710	$title = post_type_archive_title( '', false );
1711	$prefix = _x( 'Archives:', 'post type archive title prefix' );
1712	} elseif ( is_tax() ) {
1713	$queried_object = get_queried_object();
1714	if ( $queried_object ) {
1715	$tax = get_taxonomy( $queried_object->taxonomy );
1716	$title = single_term_title( '', false );
1717	$prefix = sprintf(
1718	/* translators: %s: Taxonomy singular name. */
1719	_x( '%s:', 'taxonomy term archive title prefix' ),
1720	$tax->labels->singular_name
1721	);
1722	}
1723	}
1724
1725	$original_title = $title;
1726
1727	/**
1728	* Filters the archive title prefix.
1729	*
1730	* @since 5.5.0
1731	*
1732	* @param string $prefix Archive title prefix.
1733	*/
1734	$prefix = apply_filters( 'get_the_archive_title_prefix', $prefix );
1735	if ( $prefix ) {
1736	$title = sprintf(
1737	/* translators: 1: Title prefix. 2: Title. */
1738	_x( '%1$s %2$s', 'archive title' ),
1739	$prefix,
1740	'<span>' . $title . '</span>'
1741	);
1742	}
1743
1744	/**
1745	* Filters the archive title.
1746	*
1747	* @since 4.1.0
1748	* @since 5.5.0 Added the `$prefix` and `$original_title` parameters.
1749	*
1750	* @param string $title Archive title to be displayed.
1751	* @param string $original_title Archive title without prefix.
1752	* @param string $prefix Archive title prefix.
1753	*/
1754	return apply_filters( 'get_the_archive_title', $title, $original_title, $prefix );
1755	}
1756
1757	/**
1758	* Display category, tag, term, or author description.
1759	*
1760	* @since 4.1.0
1761	*
1762	* @see get_the_archive_description()
1763	*
1764	* @param string $before Optional. Content to prepend to the description. Default empty.
1765	* @param string $after Optional. Content to append to the description. Default empty.
1766	*/
1767	function the_archive_description( $before = '', $after = '' ) {
1768	$description = get_the_archive_description();
1769	if ( $description ) {
1770	echo $before . $description . $after;
1771	}
1772	}
1773
1774	/**
1775	* Retrieves the description for an author, post type, or term archive.
1776	*
1777	* @since 4.1.0
1778	* @since 4.7.0 Added support for author archives.
1779	* @since 4.9.0 Added support for post type archives.
1780	*
1781	* @see term_description()
1782	*
1783	* @return string Archive description.
1784	*/
1785	function get_the_archive_description() {
1786	if ( is_author() ) {
1787	$description = get_the_author_meta( 'description' );
1788	} elseif ( is_post_type_archive() ) {
1789	$description = get_the_post_type_description();
1790	} else {
1791	$description = term_description();
1792	}
1793
1794	/**
1795	* Filters the archive description.
1796	*
1797	* @since 4.1.0
1798	*
1799	* @param string $description Archive description to be displayed.
1800	*/
1801	return apply_filters( 'get_the_archive_description', $description );
1802	}
1803
1804	/**
1805	* Retrieves the description for a post type archive.
1806	*
1807	* @since 4.9.0
1808	*
1809	* @return string The post type description.
1810	*/
1811	function get_the_post_type_description() {
1812	$post_type = get_query_var( 'post_type' );
1813
1814	if ( is_array( $post_type ) ) {
1815	$post_type = reset( $post_type );
1816	}
1817
1818	$post_type_obj = get_post_type_object( $post_type );
1819
1820	// Check if a description is set.
1821	if ( isset( $post_type_obj->description ) ) {
1822	$description = $post_type_obj->description;
1823	} else {
1824	$description = '';
1825	}
1826
1827	/**
1828	* Filters the description for a post type archive.
1829	*
1830	* @since 4.9.0
1831	*
1832	* @param string $description The post type description.
1833	* @param WP_Post_Type $post_type_obj The post type object.
1834	*/
1835	return apply_filters( 'get_the_post_type_description', $description, $post_type_obj );
1836	}
1837
1838	/**
1839	* Retrieve archive link content based on predefined or custom code.
1840	*
1841	* The format can be one of four styles. The 'link' for head element, 'option'
1842	* for use in the select element, 'html' for use in list (either ol or ul HTML
1843	* elements). Custom content is also supported using the before and after
1844	* parameters.
1845	*
1846	* The 'link' format uses the `<link>` HTML element with the archives
1847	* relationship. The before and after parameters are not used. The text
1848	* parameter is used to describe the link.
1849	*
1850	* The 'option' format uses the option HTML element for use in select element.
1851	* The value is the url parameter and the before and after parameters are used
1852	* between the text description.
1853	*
1854	* The 'html' format, which is the default, uses the li HTML element for use in
1855	* the list HTML elements. The before parameter is before the link and the after
1856	* parameter is after the closing link.
1857	*
1858	* The custom format uses the before parameter before the link ('a' HTML
1859	* element) and the after parameter after the closing link tag. If the above
1860	* three values for the format are not used, then custom format is assumed.
1861	*
1862	* @since 1.0.0
1863	* @since 5.2.0 Added the `$selected` parameter.
1864	*
1865	* @param string $url URL to archive.
1866	* @param string $text Archive text description.
1867	* @param string $format Optional. Can be 'link', 'option', 'html', or custom. Default 'html'.
1868	* @param string $before Optional. Content to prepend to the description. Default empty.
1869	* @param string $after Optional. Content to append to the description. Default empty.
1870	* @param bool $selected Optional. Set to true if the current page is the selected archive page.
1871	* @return string HTML link content for archive.
1872	*/
1873	function get_archives_link( $url, $text, $format = 'html', $before = '', $after = '', $selected = false ) {
1874	$text = wptexturize( $text );
1875	$url = esc_url( $url );
1876	$aria_current = $selected ? ' aria-current="page"' : '';
1877
1878	if ( 'link' === $format ) {
1879	$link_html = "\t<link rel='archives' title='" . esc_attr( $text ) . "' href='$url' />\n";
1880	} elseif ( 'option' === $format ) {
1881	$selected_attr = $selected ? " selected='selected'" : '';
1882	$link_html = "\t<option value='$url'$selected_attr>$before $text $after</option>\n";
1883	} elseif ( 'html' === $format ) {
1884	$link_html = "\t<li>$before<a href='$url'$aria_current>$text</a>$after</li>\n";
1885	} else { // Custom.
1886	$link_html = "\t$before<a href='$url'$aria_current>$text</a>$after\n";
1887	}
1888
1889	/**
1890	* Filters the archive link content.
1891	*
1892	* @since 2.6.0
1893	* @since 4.5.0 Added the `$url`, `$text`, `$format`, `$before`, and `$after` parameters.
1894	* @since 5.2.0 Added the `$selected` parameter.
1895	*
1896	* @param string $link_html The archive HTML link content.
1897	* @param string $url URL to archive.
1898	* @param string $text Archive text description.
1899	* @param string $format Link format. Can be 'link', 'option', 'html', or custom.
1900	* @param string $before Content to prepend to the description.
1901	* @param string $after Content to append to the description.
1902	* @param bool $selected True if the current page is the selected archive.
1903	*/
1904	return apply_filters( 'get_archives_link', $link_html, $url, $text, $format, $before, $after, $selected );
1905	}
1906
1907	/**
1908	* Display archive links based on type and format.
1909	*
1910	* @since 1.2.0
1911	* @since 4.4.0 The `$post_type` argument was added.
1912	* @since 5.2.0 The `$year`, `$monthnum`, `$day`, and `$w` arguments were added.
1913	*
1914	* @see get_archives_link()
1915	*
1916	* @global wpdb $wpdb WordPress database abstraction object.
1917	* @global WP_Locale $wp_locale WordPress date and time locale object.
1918	*
1919	* @param string\|array $args {
1920	* Default archive links arguments. Optional.
1921	*
1922	* @type string $type Type of archive to retrieve. Accepts 'daily', 'weekly', 'monthly',
1923	* 'yearly', 'postbypost', or 'alpha'. Both 'postbypost' and 'alpha'
1924	* display the same archive link list as well as post titles instead
1925	* of displaying dates. The difference between the two is that 'alpha'
1926	* will order by post title and 'postbypost' will order by post date.
1927	* Default 'monthly'.
1928	* @type string\|int $limit Number of links to limit the query to. Default empty (no limit).
1929	* @type string $format Format each link should take using the $before and $after args.
1930	* Accepts 'link' (`<link>` tag), 'option' (`<option>` tag), 'html'
1931	* (`<li>` tag), or a custom format, which generates a link anchor
1932	* with $before preceding and $after succeeding. Default 'html'.
1933	* @type string $before Markup to prepend to the beginning of each link. Default empty.
1934	* @type string $after Markup to append to the end of each link. Default empty.
1935	* @type bool $show_post_count Whether to display the post count alongside the link. Default false.
1936	* @type bool\|int $echo Whether to echo or return the links list. Default 1\|true to echo.
1937	* @type string $order Whether to use ascending or descending order. Accepts 'ASC', or 'DESC'.
1938	* Default 'DESC'.
1939	* @type string $post_type Post type. Default 'post'.
1940	* @type string $year Year. Default current year.
1941	* @type string $monthnum Month number. Default current month number.
1942	* @type string $day Day. Default current day.
1943	* @type string $w Week. Default current week.
1944	* }
1945	* @return void\|string Void if 'echo' argument is true, archive links if 'echo' is false.
1946	*/
1947	function wp_get_archives( $args = '' ) {
1948	global $wpdb, $wp_locale;
1949
1950	$defaults = array(
1951	'type' => 'monthly',
1952	'limit' => '',
1953	'format' => 'html',
1954	'before' => '',
1955	'after' => '',
1956	'show_post_count' => false,
1957	'echo' => 1,
1958	'order' => 'DESC',
1959	'post_type' => 'post',
1960	'year' => get_query_var( 'year' ),
1961	'monthnum' => get_query_var( 'monthnum' ),
1962	'day' => get_query_var( 'day' ),
1963	'w' => get_query_var( 'w' ),
1964	);
1965
1966	$parsed_args = wp_parse_args( $args, $defaults );
1967
1968	$post_type_object = get_post_type_object( $parsed_args['post_type'] );
1969	if ( ! is_post_type_viewable( $post_type_object ) ) {
1970	return;
1971	}
1972
1973	$parsed_args['post_type'] = $post_type_object->name;
1974
1975	if ( '' === $parsed_args['type'] ) {
1976	$parsed_args['type'] = 'monthly';
1977	}
1978
1979	if ( ! empty( $parsed_args['limit'] ) ) {
1980	$parsed_args['limit'] = absint( $parsed_args['limit'] );
1981	$parsed_args['limit'] = ' LIMIT ' . $parsed_args['limit'];
1982	}
1983
1984	$order = strtoupper( $parsed_args['order'] );
1985	if ( 'ASC' !== $order ) {
1986	$order = 'DESC';
1987	}
1988
1989	// This is what will separate dates on weekly archive links.
1990	$archive_week_separator = '–';
1991
1992	$sql_where = $wpdb->prepare( "WHERE post_type = %s AND post_status = 'publish'", $parsed_args['post_type'] );
1993
1994	/**
1995	* Filters the SQL WHERE clause for retrieving archives.
1996	*
1997	* @since 2.2.0
1998	*
1999	* @param string $sql_where Portion of SQL query containing the WHERE clause.
2000	* @param array $parsed_args An array of default arguments.
2001	*/
2002	$where = apply_filters( 'getarchives_where', $sql_where, $parsed_args );
2003
2004	/**
2005	* Filters the SQL JOIN clause for retrieving archives.
2006	*
2007	* @since 2.2.0
2008	*
2009	* @param string $sql_join Portion of SQL query containing JOIN clause.
2010	* @param array $parsed_args An array of default arguments.
2011	*/
2012	$join = apply_filters( 'getarchives_join', '', $parsed_args );
2013
2014	$output = '';
2015
2016	$last_changed = wp_cache_get_last_changed( 'posts' );
2017
2018	$limit = $parsed_args['limit'];
2019
2020	if ( 'monthly' === $parsed_args['type'] ) {
2021	$query = "SELECT YEAR(post_date) AS `year`, MONTH(post_date) AS `month`, count(ID) as posts FROM $wpdb->posts $join $where GROUP BY YEAR(post_date), MONTH(post_date) ORDER BY post_date $order $limit";
2022	$key = md5( $query );
2023	$key = "wp_get_archives:$key:$last_changed";
2024	$results = wp_cache_get( $key, 'posts' );
2025	if ( ! $results ) {
2026	$results = $wpdb->get_results( $query );
2027	wp_cache_set( $key, $results, 'posts' );
2028	}
2029	if ( $results ) {
2030	$after = $parsed_args['after'];
2031	foreach ( (array) $results as $result ) {
2032	$url = get_month_link( $result->year, $result->month );
2033	if ( 'post' !== $parsed_args['post_type'] ) {
2034	$url = add_query_arg( 'post_type', $parsed_args['post_type'], $url );
2035	}
2036	/* translators: 1: Month name, 2: 4-digit year. */
2037	$text = sprintf( __( '%1$s %2$d' ), $wp_locale->get_month( $result->month ), $result->year );
2038	if ( $parsed_args['show_post_count'] ) {
2039	$parsed_args['after'] = ' (' . $result->posts . ')' . $after;
2040	}
2041	$selected = is_archive() && (string) $parsed_args['year'] === $result->year && (string) $parsed_args['monthnum'] === $result->month;
2042	$output .= get_archives_link( $url, $text, $parsed_args['format'], $parsed_args['before'], $parsed_args['after'], $selected );
2043	}
2044	}
2045	} elseif ( 'yearly' === $parsed_args['type'] ) {
2046	$query = "SELECT YEAR(post_date) AS `year`, count(ID) as posts FROM $wpdb->posts $join $where GROUP BY YEAR(post_date) ORDER BY post_date $order $limit";
2047	$key = md5( $query );
2048	$key = "wp_get_archives:$key:$last_changed";
2049	$results = wp_cache_get( $key, 'posts' );
2050	if ( ! $results ) {
2051	$results = $wpdb->get_results( $query );
2052	wp_cache_set( $key, $results, 'posts' );
2053	}
2054	if ( $results ) {
2055	$after = $parsed_args['after'];
2056	foreach ( (array) $results as $result ) {
2057	$url = get_year_link( $result->year );
2058	if ( 'post' !== $parsed_args['post_type'] ) {
2059	$url = add_query_arg( 'post_type', $parsed_args['post_type'], $url );
2060	}
2061	$text = sprintf( '%d', $result->year );
2062	if ( $parsed_args['show_post_count'] ) {
2063	$parsed_args['after'] = ' (' . $result->posts . ')' . $after;
2064	}
2065	$selected = is_archive() && (string) $parsed_args['year'] === $result->year;
2066	$output .= get_archives_link( $url, $text, $parsed_args['format'], $parsed_args['before'], $parsed_args['after'], $selected );
2067	}
2068	}
2069	} elseif ( 'daily' === $parsed_args['type'] ) {
2070	$query = "SELECT YEAR(post_date) AS `year`, MONTH(post_date) AS `month`, DAYOFMONTH(post_date) AS `dayofmonth`, count(ID) as posts FROM $wpdb->posts $join $where GROUP BY YEAR(post_date), MONTH(post_date), DAYOFMONTH(post_date) ORDER BY post_date $order $limit";
2071	$key = md5( $query );
2072	$key = "wp_get_archives:$key:$last_changed";
2073	$results = wp_cache_get( $key, 'posts' );
2074	if ( ! $results ) {
2075	$results = $wpdb->get_results( $query );
2076	wp_cache_set( $key, $results, 'posts' );
2077	}
2078	if ( $results ) {
2079	$after = $parsed_args['after'];
2080	foreach ( (array) $results as $result ) {
2081	$url = get_day_link( $result->year, $result->month, $result->dayofmonth );
2082	if ( 'post' !== $parsed_args['post_type'] ) {
2083	$url = add_query_arg( 'post_type', $parsed_args['post_type'], $url );
2084	}
2085	$date = sprintf( '%1$d-%2$02d-%3$02d 00:00:00', $result->year, $result->month, $result->dayofmonth );
2086	$text = mysql2date( get_option( 'date_format' ), $date );
2087	if ( $parsed_args['show_post_count'] ) {
2088	$parsed_args['after'] = ' (' . $result->posts . ')' . $after;
2089	}
2090	$selected = is_archive() && (string) $parsed_args['year'] === $result->year && (string) $parsed_args['monthnum'] === $result->month && (string) $parsed_args['day'] === $result->dayofmonth;
2091	$output .= get_archives_link( $url, $text, $parsed_args['format'], $parsed_args['before'], $parsed_args['after'], $selected );
2092	}
2093	}
2094	} elseif ( 'weekly' === $parsed_args['type'] ) {
2095	$week = _wp_mysql_week( '`post_date`' );
2096	$query = "SELECT DISTINCT $week AS `week`, YEAR( `post_date` ) AS `yr`, DATE_FORMAT( `post_date`, '%Y-%m-%d' ) AS `yyyymmdd`, count( `ID` ) AS `posts` FROM `$wpdb->posts` $join $where GROUP BY $week, YEAR( `post_date` ) ORDER BY `post_date` $order $limit";
2097	$key = md5( $query );
2098	$key = "wp_get_archives:$key:$last_changed";
2099	$results = wp_cache_get( $key, 'posts' );
2100	if ( ! $results ) {
2101	$results = $wpdb->get_results( $query );
2102	wp_cache_set( $key, $results, 'posts' );
2103	}
2104	$arc_w_last = '';
2105	if ( $results ) {
2106	$after = $parsed_args['after'];
2107	foreach ( (array) $results as $result ) {
2108	if ( $result->week != $arc_w_last ) {
2109	$arc_year = $result->yr;
2110	$arc_w_last = $result->week;
2111	$arc_week = get_weekstartend( $result->yyyymmdd, get_option( 'start_of_week' ) );
2112	$arc_week_start = date_i18n( get_option( 'date_format' ), $arc_week['start'] );
2113	$arc_week_end = date_i18n( get_option( 'date_format' ), $arc_week['end'] );
2114	$url = add_query_arg(
2115	array(
2116	'm' => $arc_year,
2117	'w' => $result->week,
2118	),
2119	home_url( '/' )
2120	);
2121	if ( 'post' !== $parsed_args['post_type'] ) {
2122	$url = add_query_arg( 'post_type', $parsed_args['post_type'], $url );
2123	}
2124	$text = $arc_week_start . $archive_week_separator . $arc_week_end;
2125	if ( $parsed_args['show_post_count'] ) {
2126	$parsed_args['after'] = ' (' . $result->posts . ')' . $after;
2127	}
2128	$selected = is_archive() && (string) $parsed_args['year'] === $result->yr && (string) $parsed_args['w'] === $result->week;
2129	$output .= get_archives_link( $url, $text, $parsed_args['format'], $parsed_args['before'], $parsed_args['after'], $selected );
2130	}
2131	}
2132	}
2133	} elseif ( ( 'postbypost' === $parsed_args['type'] ) \|\| ( 'alpha' === $parsed_args['type'] ) ) {
2134	$orderby = ( 'alpha' === $parsed_args['type'] ) ? 'post_title ASC ' : 'post_date DESC, ID DESC ';
2135	$query = "SELECT * FROM $wpdb->posts $join $where ORDER BY $orderby $limit";
2136	$key = md5( $query );
2137	$key = "wp_get_archives:$key:$last_changed";
2138	$results = wp_cache_get( $key, 'posts' );
2139	if ( ! $results ) {
2140	$results = $wpdb->get_results( $query );
2141	wp_cache_set( $key, $results, 'posts' );
2142	}
2143	if ( $results ) {
2144	foreach ( (array) $results as $result ) {
2145	if ( '0000-00-00 00:00:00' !== $result->post_date ) {
2146	$url = get_permalink( $result );
2147	if ( $result->post_title ) {
2148	/** This filter is documented in wp-includes/post-template.php */
2149	$text = strip_tags( apply_filters( 'the_title', $result->post_title, $result->ID ) );
2150	} else {
2151	$text = $result->ID;
2152	}
2153	$selected = get_the_ID() === $result->ID;
2154	$output .= get_archives_link( $url, $text, $parsed_args['format'], $parsed_args['before'], $parsed_args['after'], $selected );
2155	}
2156	}
2157	}
2158	}
2159
2160	if ( $parsed_args['echo'] ) {
2161	echo $output;
2162	} else {
2163	return $output;
2164	}
2165	}
2166
2167	/**
2168	* Get number of days since the start of the week.
2169	*
2170	* @since 1.5.0
2171	*
2172	* @param int $num Number of day.
2173	* @return float Days since the start of the week.
2174	*/
2175	function calendar_week_mod( $num ) {
2176	$base = 7;
2177	return ( $num - $base * floor( $num / $base ) );
2178	}
2179
2180	/**
2181	* Display calendar with days that have posts as links.
2182	*
2183	* The calendar is cached, which will be retrieved, if it exists. If there are
2184	* no posts for the month, then it will not be displayed.
2185	*
2186	* @since 1.0.0
2187	*
2188	* @global wpdb $wpdb WordPress database abstraction object.
2189	* @global int $m
2190	* @global int $monthnum
2191	* @global int $year
2192	* @global WP_Locale $wp_locale WordPress date and time locale object.
2193	* @global array $posts
2194	*
2195	* @param bool $initial Optional. Whether to use initial calendar names. Default true.
2196	* @param bool $echo Optional. Whether to display the calendar output. Default true.
2197	* @return void\|string Void if `$echo` argument is true, calendar HTML if `$echo` is false.
2198	*/
2199	function get_calendar( $initial = true, $echo = true ) {
2200	global $wpdb, $m, $monthnum, $year, $wp_locale, $posts;
2201
2202	$key = md5( $m . $monthnum . $year );
2203	$cache = wp_cache_get( 'get_calendar', 'calendar' );
2204
2205	if ( $cache && is_array( $cache ) && isset( $cache[ $key ] ) ) {
2206	/** This filter is documented in wp-includes/general-template.php */
2207	$output = apply_filters( 'get_calendar', $cache[ $key ] );
2208
2209	if ( $echo ) {
2210	echo $output;
2211	return;
2212	}
2213
2214	return $output;
2215	}
2216
2217	if ( ! is_array( $cache ) ) {
2218	$cache = array();
2219	}
2220
2221	// Quick check. If we have no posts at all, abort!
2222	if ( ! $posts ) {
2223	$gotsome = $wpdb->get_var( "SELECT 1 as test FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'publish' LIMIT 1" );
2224	if ( ! $gotsome ) {
2225	$cache[ $key ] = '';
2226	wp_cache_set( 'get_calendar', $cache, 'calendar' );
2227	return;
2228	}
2229	}
2230
2231	if ( isset( $_GET['w'] ) ) {
2232	$w = (int) $_GET['w'];
2233	}
2234	// week_begins = 0 stands for Sunday.
2235	$week_begins = (int) get_option( 'start_of_week' );
2236
2237	// Let's figure out when we are.
2238	if ( ! empty( $monthnum ) && ! empty( $year ) ) {
2239	$thismonth = zeroise( (int) $monthnum, 2 );
2240	$thisyear = (int) $year;
2241	} elseif ( ! empty( $w ) ) {
2242	// We need to get the month from MySQL.
2243	$thisyear = (int) substr( $m, 0, 4 );
2244	// It seems MySQL's weeks disagree with PHP's.
2245	$d = ( ( $w - 1 ) * 7 ) + 6;
2246	$thismonth = $wpdb->get_var( "SELECT DATE_FORMAT((DATE_ADD('{$thisyear}0101', INTERVAL $d DAY) ), '%m')" );
2247	} elseif ( ! empty( $m ) ) {
2248	$thisyear = (int) substr( $m, 0, 4 );
2249	if ( strlen( $m ) < 6 ) {
2250	$thismonth = '01';
2251	} else {
2252	$thismonth = zeroise( (int) substr( $m, 4, 2 ), 2 );
2253	}
2254	} else {
2255	$thisyear = current_time( 'Y' );
2256	$thismonth = current_time( 'm' );
2257	}
2258
2259	$unixmonth = mktime( 0, 0, 0, $thismonth, 1, $thisyear );
2260	$last_day = gmdate( 't', $unixmonth );
2261
2262	// Get the next and previous month and year with at least one post.
2263	$previous = $wpdb->get_row(
2264	"SELECT MONTH(post_date) AS month, YEAR(post_date) AS year
2265	FROM $wpdb->posts
2266	WHERE post_date < '$thisyear-$thismonth-01'
2267	AND post_type = 'post' AND post_status = 'publish'
2268	ORDER BY post_date DESC
2269	LIMIT 1"
2270	);
2271	$next = $wpdb->get_row(
2272	"SELECT MONTH(post_date) AS month, YEAR(post_date) AS year
2273	FROM $wpdb->posts
2274	WHERE post_date > '$thisyear-$thismonth-{$last_day} 23:59:59'
2275	AND post_type = 'post' AND post_status = 'publish'
2276	ORDER BY post_date ASC
2277	LIMIT 1"
2278	);
2279
2280	/* translators: Calendar caption: 1: Month name, 2: 4-digit year. */
2281	$calendar_caption = _x( '%1$s %2$s', 'calendar caption' );
2282	$calendar_output = '<table id="wp-calendar" class="wp-calendar-table">
2283	<caption>' . sprintf(
2284	$calendar_caption,
2285	$wp_locale->get_month( $thismonth ),
2286	gmdate( 'Y', $unixmonth )
2287	) . '</caption>
2288	<thead>
2289	<tr>';
2290
2291	$myweek = array();
2292
2293	for ( $wdcount = 0; $wdcount <= 6; $wdcount++ ) {
2294	$myweek[] = $wp_locale->get_weekday( ( $wdcount + $week_begins ) % 7 );
2295	}
2296
2297	foreach ( $myweek as $wd ) {
2298	$day_name = $initial ? $wp_locale->get_weekday_initial( $wd ) : $wp_locale->get_weekday_abbrev( $wd );
2299	$wd = esc_attr( $wd );
2300	$calendar_output .= "\n\t\t<th scope=\"col\" title=\"$wd\">$day_name</th>";
2301	}
2302
2303	$calendar_output .= '
2304	</tr>
2305	</thead>
2306	<tbody>
2307	<tr>';
2308
2309	$daywithpost = array();
2310
2311	// Get days with posts.
2312	$dayswithposts = $wpdb->get_results(
2313	"SELECT DISTINCT DAYOFMONTH(post_date)
2314	FROM $wpdb->posts WHERE post_date >= '{$thisyear}-{$thismonth}-01 00:00:00'
2315	AND post_type = 'post' AND post_status = 'publish'
2316	AND post_date <= '{$thisyear}-{$thismonth}-{$last_day} 23:59:59'",
2317	ARRAY_N
2318	);
2319
2320	if ( $dayswithposts ) {
2321	foreach ( (array) $dayswithposts as $daywith ) {
2322	$daywithpost[] = (int) $daywith[0];
2323	}
2324	}
2325
2326	// See how much we should pad in the beginning.
2327	$pad = calendar_week_mod( gmdate( 'w', $unixmonth ) - $week_begins );
2328	if ( 0 != $pad ) {
2329	$calendar_output .= "\n\t\t" . '<td colspan="' . esc_attr( $pad ) . '" class="pad"> </td>';
2330	}
2331
2332	$newrow = false;
2333	$daysinmonth = (int) gmdate( 't', $unixmonth );
2334
2335	for ( $day = 1; $day <= $daysinmonth; ++$day ) {
2336	if ( isset( $newrow ) && $newrow ) {
2337	$calendar_output .= "\n\t</tr>\n\t<tr>\n\t\t";
2338	}
2339	$newrow = false;
2340
2341	if ( current_time( 'j' ) == $day &&
2342	current_time( 'm' ) == $thismonth &&
2343	current_time( 'Y' ) == $thisyear ) {
2344	$calendar_output .= '<td id="today">';
2345	} else {
2346	$calendar_output .= '<td>';
2347	}
2348
2349	if ( in_array( $day, $daywithpost, true ) ) {
2350	// Any posts today?
2351	$date_format = gmdate( _x( 'F j, Y', 'daily archives date format' ), strtotime( "{$thisyear}-{$thismonth}-{$day}" ) );
2352	/* translators: Post calendar label. %s: Date. */
2353	$label = sprintf( __( 'Posts published on %s' ), $date_format );
2354	$calendar_output .= sprintf(
2355	'<a href="%s" aria-label="%s">%s</a>',
2356	get_day_link( $thisyear, $thismonth, $day ),
2357	esc_attr( $label ),
2358	$day
2359	);
2360	} else {
2361	$calendar_output .= $day;
2362	}
2363
2364	$calendar_output .= '</td>';
2365
2366	if ( 6 == calendar_week_mod( gmdate( 'w', mktime( 0, 0, 0, $thismonth, $day, $thisyear ) ) - $week_begins ) ) {
2367	$newrow = true;
2368	}
2369	}
2370
2371	$pad = 7 - calendar_week_mod( gmdate( 'w', mktime( 0, 0, 0, $thismonth, $day, $thisyear ) ) - $week_begins );
2372	if ( 0 != $pad && 7 != $pad ) {
2373	$calendar_output .= "\n\t\t" . '<td class="pad" colspan="' . esc_attr( $pad ) . '"> </td>';
2374	}
2375
2376	$calendar_output .= "\n\t</tr>\n\t</tbody>";
2377
2378	$calendar_output .= "\n\t</table>";
2379
2380	$calendar_output .= '<nav aria-label="' . __( 'Previous and next months' ) . '" class="wp-calendar-nav">';
2381
2382	if ( $previous ) {
2383	$calendar_output .= "\n\t\t" . '<span class="wp-calendar-nav-prev"><a href="' . get_month_link( $previous->year, $previous->month ) . '">« ' .
2384	$wp_locale->get_month_abbrev( $wp_locale->get_month( $previous->month ) ) .
2385	'</a></span>';
2386	} else {
2387	$calendar_output .= "\n\t\t" . '<span class="wp-calendar-nav-prev"> </span>';
2388	}
2389
2390	$calendar_output .= "\n\t\t" . '<span class="pad"> </span>';
2391
2392	if ( $next ) {
2393	$calendar_output .= "\n\t\t" . '<span class="wp-calendar-nav-next"><a href="' . get_month_link( $next->year, $next->month ) . '">' .
2394	$wp_locale->get_month_abbrev( $wp_locale->get_month( $next->month ) ) .
2395	' »</a></span>';
2396	} else {
2397	$calendar_output .= "\n\t\t" . '<span class="wp-calendar-nav-next"> </span>';
2398	}
2399
2400	$calendar_output .= '
2401	</nav>';
2402
2403	$cache[ $key ] = $calendar_output;
2404	wp_cache_set( 'get_calendar', $cache, 'calendar' );
2405
2406	if ( $echo ) {
2407	/**
2408	* Filters the HTML calendar output.
2409	*
2410	* @since 3.0.0
2411	*
2412	* @param string $calendar_output HTML output of the calendar.
2413	*/
2414	echo apply_filters( 'get_calendar', $calendar_output );
2415	return;
2416	}
2417	/** This filter is documented in wp-includes/general-template.php */
2418	return apply_filters( 'get_calendar', $calendar_output );
2419	}
2420
2421	/**
2422	* Purge the cached results of get_calendar.
2423	*
2424	* @see get_calendar()
2425	* @since 2.1.0
2426	*/
2427	function delete_get_calendar_cache() {
2428	wp_cache_delete( 'get_calendar', 'calendar' );
2429	}
2430
2431	/**
2432	* Display all of the allowed tags in HTML format with attributes.
2433	*
2434	* This is useful for displaying in the comment area, which elements and
2435	* attributes are supported. As well as any plugins which want to display it.
2436	*
2437	* @since 1.0.1
2438	*
2439	* @global array $allowedtags
2440	*
2441	* @return string HTML allowed tags entity encoded.
2442	*/
2443	function allowed_tags() {
2444	global $allowedtags;
2445	$allowed = '';
2446	foreach ( (array) $allowedtags as $tag => $attributes ) {
2447	$allowed .= '<' . $tag;
2448	if ( 0 < count( $attributes ) ) {
2449	foreach ( $attributes as $attribute => $limits ) {
2450	$allowed .= ' ' . $attribute . '=""';
2451	}
2452	}
2453	$allowed .= '> ';
2454	}
2455	return htmlentities( $allowed );
2456	}
2457
2458	/***** Date/Time tags */
2459
2460	/**
2461	* Outputs the date in iso8601 format for xml files.
2462	*
2463	* @since 1.0.0
2464	*/
2465	function the_date_xml() {
2466	echo mysql2date( 'Y-m-d', get_post()->post_date, false );
2467	}
2468
2469	/**
2470	* Display or Retrieve the date the current post was written (once per date)
2471	*
2472	* Will only output the date if the current post's date is different from the
2473	* previous one output.
2474	*
2475	* i.e. Only one date listing will show per day worth of posts shown in the loop, even if the
2476	* function is called several times for each post.
2477	*
2478	* HTML output can be filtered with 'the_date'.
2479	* Date string output can be filtered with 'get_the_date'.
2480	*
2481	* @since 0.71
2482	*
2483	* @global string $currentday The day of the current post in the loop.
2484	* @global string $previousday The day of the previous post in the loop.
2485	*
2486	* @param string $format Optional. PHP date format. Defaults to the 'date_format' option.
2487	* @param string $before Optional. Output before the date. Default empty.
2488	* @param string $after Optional. Output after the date. Default empty.
2489	* @param bool $echo Optional. Whether to echo the date or return it. Default true.
2490	* @return string\|void String if retrieving.
2491	*/
2492	function the_date( $format = '', $before = '', $after = '', $echo = true ) {
2493	global $currentday, $previousday;
2494
2495	$the_date = '';
2496
2497	if ( is_new_day() ) {
2498	$the_date = $before . get_the_date( $format ) . $after;
2499	$previousday = $currentday;
2500	}
2501
2502	/**
2503	* Filters the date a post was published for display.
2504	*
2505	* @since 0.71
2506	*
2507	* @param string $the_date The formatted date string.
2508	* @param string $format PHP date format.
2509	* @param string $before HTML output before the date.
2510	* @param string $after HTML output after the date.
2511	*/
2512	$the_date = apply_filters( 'the_date', $the_date, $format, $before, $after );
2513
2514	if ( $echo ) {
2515	echo $the_date;
2516	} else {
2517	return $the_date;
2518	}
2519	}
2520
2521	/**
2522	* Retrieve the date on which the post was written.
2523	*
2524	* Unlike the_date() this function will always return the date.
2525	* Modify output with the {@see 'get_the_date'} filter.
2526	*
2527	* @since 3.0.0
2528	*
2529	* @param string $format Optional. PHP date format. Defaults to the 'date_format' option.
2530	* @param int\|WP_Post $post Optional. Post ID or WP_Post object. Default current post.
2531	* @return string\|false Date the current post was written. False on failure.
2532	*/
2533	function get_the_date( $format = '', $post = null ) {
2534	$post = get_post( $post );
2535
2536	if ( ! $post ) {
2537	return false;
2538	}
2539
2540	$_format = ! empty( $format ) ? $format : get_option( 'date_format' );
2541
2542	$the_date = get_post_time( $_format, false, $post, true );
2543
2544	/**
2545	* Filters the date a post was published.
2546	*
2547	* @since 3.0.0
2548	*
2549	* @param string $the_date The formatted date.
2550	* @param string $format PHP date format.
2551	* @param int\|WP_Post $post The post object or ID.
2552	*/
2553	return apply_filters( 'get_the_date', $the_date, $format, $post );
2554	}
2555
2556	/**
2557	* Display the date on which the post was last modified.
2558	*
2559	* @since 2.1.0
2560	*
2561	* @param string $format Optional. PHP date format. Defaults to the 'date_format' option.
2562	* @param string $before Optional. Output before the date. Default empty.
2563	* @param string $after Optional. Output after the date. Default empty.
2564	* @param bool $echo Optional. Whether to echo the date or return it. Default true.
2565	* @return string\|void String if retrieving.
2566	*/
2567	function the_modified_date( $format = '', $before = '', $after = '', $echo = true ) {
2568	$the_modified_date = $before . get_the_modified_date( $format ) . $after;
2569
2570	/**
2571	* Filters the date a post was last modified for display.
2572	*
2573	* @since 2.1.0
2574	*
2575	* @param string\|false $the_modified_date The last modified date or false if no post is found.
2576	* @param string $format PHP date format.
2577	* @param string $before HTML output before the date.
2578	* @param string $after HTML output after the date.
2579	*/
2580	$the_modified_date = apply_filters( 'the_modified_date', $the_modified_date, $format, $before, $after );
2581
2582	if ( $echo ) {
2583	echo $the_modified_date;
2584	} else {
2585	return $the_modified_date;
2586	}
2587
2588	}
2589
2590	/**
2591	* Retrieve the date on which the post was last modified.
2592	*
2593	* @since 2.1.0
2594	* @since 4.6.0 Added the `$post` parameter.
2595	*
2596	* @param string $format Optional. PHP date format. Defaults to the 'date_format' option.
2597	* @param int\|WP_Post $post Optional. Post ID or WP_Post object. Default current post.
2598	* @return string\|int\|false Date the current post was modified. False on failure.
2599	*/
2600	function get_the_modified_date( $format = '', $post = null ) {
2601	$post = get_post( $post );
2602
2603	if ( ! $post ) {
2604	// For backward compatibility, failures go through the filter below.
2605	$the_time = false;
2606	} else {
2607	$_format = ! empty( $format ) ? $format : get_option( 'date_format' );
2608
2609	$the_time = get_post_modified_time( $_format, false, $post, true );
2610	}
2611
2612	/**
2613	* Filters the date a post was last modified.
2614	*
2615	* @since 2.1.0
2616	* @since 4.6.0 Added the `$post` parameter.
2617	*
2618	* @param string\|int\|false $the_time The formatted date or false if no post is found.
2619	* @param string $format PHP date format.
2620	* @param WP_Post\|null $post WP_Post object or null if no post is found.
2621	*/
2622	return apply_filters( 'get_the_modified_date', $the_time, $format, $post );
2623	}
2624
2625	/**
2626	* Display the time at which the post was written.
2627	*
2628	* @since 0.71
2629	*
2630	* @param string $format Optional. Format to use for retrieving the time the post
2631	* was written. Accepts 'G', 'U', or PHP date format.
2632	* Defaults to the 'time_format' option.
2633	*/
2634	function the_time( $format = '' ) {
2635	/**
2636	* Filters the time a post was written for display.
2637	*
2638	* @since 0.71
2639	*
2640	* @param string $get_the_time The formatted time.
2641	* @param string $format Format to use for retrieving the time the post
2642	* was written. Accepts 'G', 'U', or PHP date format.
2643	*/
2644	echo apply_filters( 'the_time', get_the_time( $format ), $format );
2645	}
2646
2647	/**
2648	* Retrieve the time at which the post was written.
2649	*
2650	* @since 1.5.0
2651	*
2652	* @param string $format Optional. Format to use for retrieving the time the post
2653	* was written. Accepts 'G', 'U', or PHP date format.
2654	* Defaults to the 'time_format' option.
2655	* @param int\|WP_Post $post WP_Post object or ID. Default is global `$post` object.
2656	* @return string\|int\|false Formatted date string or Unix timestamp if `$format` is 'U' or 'G'.
2657	* False on failure.
2658	*/
2659	function get_the_time( $format = '', $post = null ) {
2660	$post = get_post( $post );
2661
2662	if ( ! $post ) {
2663	return false;
2664	}
2665
2666	$_format = ! empty( $format ) ? $format : get_option( 'time_format' );
2667
2668	$the_time = get_post_time( $_format, false, $post, true );
2669
2670	/**
2671	* Filters the time a post was written.
2672	*
2673	* @since 1.5.0
2674	*
2675	* @param string $the_time The formatted time.
2676	* @param string $format Format to use for retrieving the time the post
2677	* was written. Accepts 'G', 'U', or PHP date format.
2678	* @param int\|WP_Post $post WP_Post object or ID.
2679	*/
2680	return apply_filters( 'get_the_time', $the_time, $format, $post );
2681	}
2682
2683	/**
2684	* Retrieve the time at which the post was written.
2685	*
2686	* @since 2.0.0
2687	*
2688	* @param string $format Optional. Format to use for retrieving the time the post
2689	* was written. Accepts 'G', 'U', or PHP date format. Default 'U'.
2690	* @param bool $gmt Optional. Whether to retrieve the GMT time. Default false.
2691	* @param int\|WP_Post $post WP_Post object or ID. Default is global `$post` object.
2692	* @param bool $translate Whether to translate the time string. Default false.
2693	* @return string\|int\|false Formatted date string or Unix timestamp if `$format` is 'U' or 'G'.
2694	* False on failure.
2695	*/
2696	function get_post_time( $format = 'U', $gmt = false, $post = null, $translate = false ) {
2697	$post = get_post( $post );
2698
2699	if ( ! $post ) {
2700	return false;
2701	}
2702
2703	$source = ( $gmt ) ? 'gmt' : 'local';
2704	$datetime = get_post_datetime( $post, 'date', $source );
2705
2706	if ( false === $datetime ) {
2707	return false;
2708	}
2709
2710	if ( 'U' === $format \|\| 'G' === $format ) {
2711	$time = $datetime->getTimestamp();
2712
2713	// Returns a sum of timestamp with timezone offset. Ideally should never be used.
2714	if ( ! $gmt ) {
2715	$time += $datetime->getOffset();
2716	}
2717	} elseif ( $translate ) {
2718	$time = wp_date( $format, $datetime->getTimestamp(), $gmt ? new DateTimeZone( 'UTC' ) : null );
2719	} else {
2720	if ( $gmt ) {
2721	$datetime = $datetime->setTimezone( new DateTimeZone( 'UTC' ) );
2722	}
2723
2724	$time = $datetime->format( $format );
2725	}
2726
2727	/**
2728	* Filters the localized time a post was written.
2729	*
2730	* @since 2.6.0
2731	*
2732	* @param string $time The formatted time.
2733	* @param string $format Format to use for retrieving the time the post was written.
2734	* Accepts 'G', 'U', or PHP date format. Default 'U'.
2735	* @param bool $gmt Whether to retrieve the GMT time. Default false.
2736	*/
2737	return apply_filters( 'get_post_time', $time, $format, $gmt );
2738	}
2739
2740	/**
2741	* Retrieve post published or modified time as a `DateTimeImmutable` object instance.
2742	*
2743	* The object will be set to the timezone from WordPress settings.
2744	*
2745	* For legacy reasons, this function allows to choose to instantiate from local or UTC time in database.
2746	* Normally this should make no difference to the result. However, the values might get out of sync in database,
2747	* typically because of timezone setting changes. The parameter ensures the ability to reproduce backwards
2748	* compatible behaviors in such cases.
2749	*
2750	* @since 5.3.0
2751	*
2752	* @param int\|WP_Post $post Optional. WP_Post object or ID. Default is global `$post` object.
2753	* @param string $field Optional. Published or modified time to use from database. Accepts 'date' or 'modified'.
2754	* Default 'date'.
2755	* @param string $source Optional. Local or UTC time to use from database. Accepts 'local' or 'gmt'.
2756	* Default 'local'.
2757	* @return DateTimeImmutable\|false Time object on success, false on failure.
2758	*/
2759	function get_post_datetime( $post = null, $field = 'date', $source = 'local' ) {
2760	$post = get_post( $post );
2761
2762	if ( ! $post ) {
2763	return false;
2764	}
2765
2766	$wp_timezone = wp_timezone();
2767
2768	if ( 'gmt' === $source ) {
2769	$time = ( 'modified' === $field ) ? $post->post_modified_gmt : $post->post_date_gmt;
2770	$timezone = new DateTimeZone( 'UTC' );
2771	} else {
2772	$time = ( 'modified' === $field ) ? $post->post_modified : $post->post_date;
2773	$timezone = $wp_timezone;
2774	}
2775
2776	if ( empty( $time ) \|\| '0000-00-00 00:00:00' === $time ) {
2777	return false;
2778	}
2779
2780	$datetime = date_create_immutable_from_format( 'Y-m-d H:i:s', $time, $timezone );
2781
2782	if ( false === $datetime ) {
2783	return false;
2784	}
2785
2786	return $datetime->setTimezone( $wp_timezone );
2787	}
2788
2789	/**
2790	* Retrieve post published or modified time as a Unix timestamp.
2791	*
2792	* Note that this function returns a true Unix timestamp, not summed with timezone offset
2793	* like older WP functions.
2794	*
2795	* @since 5.3.0
2796	*
2797	* @param int\|WP_Post $post Optional. WP_Post object or ID. Default is global `$post` object.
2798	* @param string $field Optional. Published or modified time to use from database. Accepts 'date' or 'modified'.
2799	* Default 'date'.
2800	* @return int\|false Unix timestamp on success, false on failure.
2801	*/
2802	function get_post_timestamp( $post = null, $field = 'date' ) {
2803	$datetime = get_post_datetime( $post, $field );
2804
2805	if ( false === $datetime ) {
2806	return false;
2807	}
2808
2809	return $datetime->getTimestamp();
2810	}
2811
2812	/**
2813	* Display the time at which the post was last modified.
2814	*
2815	* @since 2.0.0
2816	*
2817	* @param string $format Optional. Format to use for retrieving the time the post
2818	* was modified. Accepts 'G', 'U', or PHP date format.
2819	* Defaults to the 'time_format' option.
2820	*/
2821	function the_modified_time( $format = '' ) {
2822	/**
2823	* Filters the localized time a post was last modified, for display.
2824	*
2825	* @since 2.0.0
2826	*
2827	* @param string\|false $get_the_modified_time The formatted time or false if no post is found.
2828	* @param string $format Format to use for retrieving the time the post
2829	* was modified. Accepts 'G', 'U', or PHP date format.
2830	*/
2831	echo apply_filters( 'the_modified_time', get_the_modified_time( $format ), $format );
2832	}
2833
2834	/**
2835	* Retrieve the time at which the post was last modified.
2836	*
2837	* @since 2.0.0
2838	* @since 4.6.0 Added the `$post` parameter.
2839	*
2840	* @param string $format Optional. Format to use for retrieving the time the post
2841	* was modified. Accepts 'G', 'U', or PHP date format.
2842	* Defaults to the 'time_format' option.
2843	* @param int\|WP_Post $post Optional. Post ID or WP_Post object. Default current post.
2844	* @return string\|int\|false Formatted date string or Unix timestamp. False on failure.
2845	*/
2846	function get_the_modified_time( $format = '', $post = null ) {
2847	$post = get_post( $post );
2848
2849	if ( ! $post ) {
2850	// For backward compatibility, failures go through the filter below.
2851	$the_time = false;
2852	} else {
2853	$_format = ! empty( $format ) ? $format : get_option( 'time_format' );
2854
2855	$the_time = get_post_modified_time( $_format, false, $post, true );
2856	}
2857
2858	/**
2859	* Filters the localized time a post was last modified.
2860	*
2861	* @since 2.0.0
2862	* @since 4.6.0 Added the `$post` parameter.
2863	*
2864	* @param string\|int\|false $the_time The formatted time or false if no post is found.
2865	* @param string $format Format to use for retrieving the time the post
2866	* was modified. Accepts 'G', 'U', or PHP date format.
2867	* @param WP_Post\|null $post WP_Post object or null if no post is found.
2868	*/
2869	return apply_filters( 'get_the_modified_time', $the_time, $format, $post );
2870	}
2871
2872	/**
2873	* Retrieve the time at which the post was last modified.
2874	*
2875	* @since 2.0.0
2876	*
2877	* @param string $format Optional. Format to use for retrieving the time the post
2878	* was modified. Accepts 'G', 'U', or PHP date format. Default 'U'.
2879	* @param bool $gmt Optional. Whether to retrieve the GMT time. Default false.
2880	* @param int\|WP_Post $post WP_Post object or ID. Default is global `$post` object.
2881	* @param bool $translate Whether to translate the time string. Default false.
2882	* @return string\|int\|false Formatted date string or Unix timestamp if `$format` is 'U' or 'G'.
2883	* False on failure.
2884	*/
2885	function get_post_modified_time( $format = 'U', $gmt = false, $post = null, $translate = false ) {
2886	$post = get_post( $post );
2887
2888	if ( ! $post ) {
2889	return false;
2890	}
2891
2892	$source = ( $gmt ) ? 'gmt' : 'local';
2893	$datetime = get_post_datetime( $post, 'modified', $source );
2894
2895	if ( false === $datetime ) {
2896	return false;
2897	}
2898
2899	if ( 'U' === $format \|\| 'G' === $format ) {
2900	$time = $datetime->getTimestamp();
2901
2902	// Returns a sum of timestamp with timezone offset. Ideally should never be used.
2903	if ( ! $gmt ) {
2904	$time += $datetime->getOffset();
2905	}
2906	} elseif ( $translate ) {
2907	$time = wp_date( $format, $datetime->getTimestamp(), $gmt ? new DateTimeZone( 'UTC' ) : null );
2908	} else {
2909	if ( $gmt ) {
2910	$datetime = $datetime->setTimezone( new DateTimeZone( 'UTC' ) );
2911	}
2912
2913	$time = $datetime->format( $format );
2914	}
2915
2916	/**
2917	* Filters the localized time a post was last modified.
2918	*
2919	* @since 2.8.0
2920	*
2921	* @param string\|int $time Formatted date string or Unix timestamp if `$format` is 'U' or 'G'.
2922	* @param string $format Format to use for retrieving the time the post was modified.
2923	* Accepts 'G', 'U', or PHP date format. Default 'U'.
2924	* @param bool $gmt Whether to retrieve the GMT time. Default false.
2925	*/
2926	return apply_filters( 'get_post_modified_time', $time, $format, $gmt );
2927	}
2928
2929	/**
2930	* Display the weekday on which the post was written.
2931	*
2932	* @since 0.71
2933	*
2934	* @global WP_Locale $wp_locale WordPress date and time locale object.
2935	*/
2936	function the_weekday() {
2937	global $wp_locale;
2938
2939	$post = get_post();
2940
2941	if ( ! $post ) {
2942	return;
2943	}
2944
2945	$the_weekday = $wp_locale->get_weekday( get_post_time( 'w', false, $post ) );
2946
2947	/**
2948	* Filters the weekday on which the post was written, for display.
2949	*
2950	* @since 0.71
2951	*
2952	* @param string $the_weekday
2953	*/
2954	echo apply_filters( 'the_weekday', $the_weekday );
2955	}
2956
2957	/**
2958	* Display the weekday on which the post was written.
2959	*
2960	* Will only output the weekday if the current post's weekday is different from
2961	* the previous one output.
2962	*
2963	* @since 0.71
2964	*
2965	* @global WP_Locale $wp_locale WordPress date and time locale object.
2966	* @global string $currentday The day of the current post in the loop.
2967	* @global string $previousweekday The day of the previous post in the loop.
2968	*
2969	* @param string $before Optional. Output before the date. Default empty.
2970	* @param string $after Optional. Output after the date. Default empty.
2971	*/
2972	function the_weekday_date( $before = '', $after = '' ) {
2973	global $wp_locale, $currentday, $previousweekday;
2974
2975	$post = get_post();
2976
2977	if ( ! $post ) {
2978	return;
2979	}
2980
2981	$the_weekday_date = '';
2982
2983	if ( $currentday !== $previousweekday ) {
2984	$the_weekday_date .= $before;
2985	$the_weekday_date .= $wp_locale->get_weekday( get_post_time( 'w', false, $post ) );
2986	$the_weekday_date .= $after;
2987	$previousweekday = $currentday;
2988	}
2989
2990	/**
2991	* Filters the localized date on which the post was written, for display.
2992	*
2993	* @since 0.71
2994	*
2995	* @param string $the_weekday_date The weekday on which the post was written.
2996	* @param string $before The HTML to output before the date.
2997	* @param string $after The HTML to output after the date.
2998	*/
2999	echo apply_filters( 'the_weekday_date', $the_weekday_date, $before, $after );
3000	}
3001
3002	/**
3003	* Fire the wp_head action.
3004	*
3005	* See {@see 'wp_head'}.
3006	*
3007	* @since 1.2.0
3008	*/
3009	function wp_head() {
3010	/**
3011	* Prints scripts or data in the head tag on the front end.
3012	*
3013	* @since 1.5.0
3014	*/
3015	do_action( 'wp_head' );
3016	}
3017
3018	/**
3019	* Fire the wp_footer action.
3020	*
3021	* See {@see 'wp_footer'}.
3022	*
3023	* @since 1.5.1
3024	*/
3025	function wp_footer() {
3026	/**
3027	* Prints scripts or data before the closing body tag on the front end.
3028	*
3029	* @since 1.5.1
3030	*/
3031	do_action( 'wp_footer' );
3032	}
3033
3034	/**
3035	* Fire the wp_body_open action.
3036	*
3037	* See {@see 'wp_body_open'}.
3038	*
3039	* @since 5.2.0
3040	*/
3041	function wp_body_open() {
3042	/**
3043	* Triggered after the opening body tag.
3044	*
3045	* @since 5.2.0
3046	*/
3047	do_action( 'wp_body_open' );
3048	}
3049
3050	/**
3051	* Display the links to the general feeds.
3052	*
3053	* @since 2.8.0
3054	*
3055	* @param array $args Optional arguments.
3056	*/
3057	function feed_links( $args = array() ) {
3058	if ( ! current_theme_supports( 'automatic-feed-links' ) ) {
3059	return;
3060	}
3061
3062	$defaults = array(
3063	/* translators: Separator between blog name and feed type in feed links. */
3064	'separator' => _x( '»', 'feed link' ),
3065	/* translators: 1: Blog title, 2: Separator (raquo). */
3066	'feedtitle' => __( '%1$s %2$s Feed' ),
3067	/* translators: 1: Blog title, 2: Separator (raquo). */
3068	'comstitle' => __( '%1$s %2$s Comments Feed' ),
3069	);
3070
3071	$args = wp_parse_args( $args, $defaults );
3072
3073	/**
3074	* Filters whether to display the posts feed link.
3075	*
3076	* @since 4.4.0
3077	*
3078	* @param bool $show Whether to display the posts feed link. Default true.
3079	*/
3080	if ( apply_filters( 'feed_links_show_posts_feed', true ) ) {
3081	echo '<link rel="alternate" type="' . feed_content_type() . '" title="' . esc_attr( sprintf( $args['feedtitle'], get_bloginfo( 'name' ), $args['separator'] ) ) . '" href="' . esc_url( get_feed_link() ) . "\" />\n";
3082	}
3083
3084	/**
3085	* Filters whether to display the comments feed link.
3086	*
3087	* @since 4.4.0
3088	*
3089	* @param bool $show Whether to display the comments feed link. Default true.
3090	*/
3091	if ( apply_filters( 'feed_links_show_comments_feed', true ) ) {
3092	echo '<link rel="alternate" type="' . feed_content_type() . '" title="' . esc_attr( sprintf( $args['comstitle'], get_bloginfo( 'name' ), $args['separator'] ) ) . '" href="' . esc_url( get_feed_link( 'comments_' . get_default_feed() ) ) . "\" />\n";
3093	}
3094	}
3095
3096	/**
3097	* Display the links to the extra feeds such as category feeds.
3098	*
3099	* @since 2.8.0
3100	*
3101	* @param array $args Optional arguments.
3102	*/
3103	function feed_links_extra( $args = array() ) {
3104	$defaults = array(
3105	/* translators: Separator between blog name and feed type in feed links. */
3106	'separator' => _x( '»', 'feed link' ),
3107	/* translators: 1: Blog name, 2: Separator (raquo), 3: Post title. */
3108	'singletitle' => __( '%1$s %2$s %3$s Comments Feed' ),
3109	/* translators: 1: Blog name, 2: Separator (raquo), 3: Category name. */
3110	'cattitle' => __( '%1$s %2$s %3$s Category Feed' ),
3111	/* translators: 1: Blog name, 2: Separator (raquo), 3: Tag name. */
3112	'tagtitle' => __( '%1$s %2$s %3$s Tag Feed' ),
3113	/* translators: 1: Blog name, 2: Separator (raquo), 3: Term name, 4: Taxonomy singular name. */
3114	'taxtitle' => __( '%1$s %2$s %3$s %4$s Feed' ),
3115	/* translators: 1: Blog name, 2: Separator (raquo), 3: Author name. */
3116	'authortitle' => __( '%1$s %2$s Posts by %3$s Feed' ),
3117	/* translators: 1: Blog name, 2: Separator (raquo), 3: Search query. */
3118	'searchtitle' => __( '%1$s %2$s Search Results for “%3$s” Feed' ),
3119	/* translators: 1: Blog name, 2: Separator (raquo), 3: Post type name. */
3120	'posttypetitle' => __( '%1$s %2$s %3$s Feed' ),
3121	);
3122
3123	$args = wp_parse_args( $args, $defaults );
3124
3125	if ( is_singular() ) {
3126	$id = 0;
3127	$post = get_post( $id );
3128
3129	if ( comments_open() \|\| pings_open() \|\| $post->comment_count > 0 ) {
3130	$title = sprintf( $args['singletitle'], get_bloginfo( 'name' ), $args['separator'], the_title_attribute( array( 'echo' => false ) ) );
3131	$href = get_post_comments_feed_link( $post->ID );
3132	}
3133	} elseif ( is_post_type_archive() ) {
3134	$post_type = get_query_var( 'post_type' );
3135	if ( is_array( $post_type ) ) {
3136	$post_type = reset( $post_type );
3137	}
3138
3139	$post_type_obj = get_post_type_object( $post_type );
3140	$title = sprintf( $args['posttypetitle'], get_bloginfo( 'name' ), $args['separator'], $post_type_obj->labels->name );
3141	$href = get_post_type_archive_feed_link( $post_type_obj->name );
3142	} elseif ( is_category() ) {
3143	$term = get_queried_object();
3144
3145	if ( $term ) {
3146	$title = sprintf( $args['cattitle'], get_bloginfo( 'name' ), $args['separator'], $term->name );
3147	$href = get_category_feed_link( $term->term_id );
3148	}
3149	} elseif ( is_tag() ) {
3150	$term = get_queried_object();
3151
3152	if ( $term ) {
3153	$title = sprintf( $args['tagtitle'], get_bloginfo( 'name' ), $args['separator'], $term->name );
3154	$href = get_tag_feed_link( $term->term_id );
3155	}
3156	} elseif ( is_tax() ) {
3157	$term = get_queried_object();
3158
3159	if ( $term ) {
3160	$tax = get_taxonomy( $term->taxonomy );
3161	$title = sprintf( $args['taxtitle'], get_bloginfo( 'name' ), $args['separator'], $term->name, $tax->labels->singular_name );
3162	$href = get_term_feed_link( $term->term_id, $term->taxonomy );
3163	}
3164	} elseif ( is_author() ) {
3165	$author_id = (int) get_query_var( 'author' );
3166
3167	$title = sprintf( $args['authortitle'], get_bloginfo( 'name' ), $args['separator'], get_the_author_meta( 'display_name', $author_id ) );
3168	$href = get_author_feed_link( $author_id );
3169	} elseif ( is_search() ) {
3170	$title = sprintf( $args['searchtitle'], get_bloginfo( 'name' ), $args['separator'], get_search_query( false ) );
3171	$href = get_search_feed_link();
3172	}
3173
3174	if ( isset( $title ) && isset( $href ) ) {
3175	echo '<link rel="alternate" type="' . feed_content_type() . '" title="' . esc_attr( $title ) . '" href="' . esc_url( $href ) . '" />' . "\n";
3176	}
3177	}
3178
3179	/**
3180	* Display the link to the Really Simple Discovery service endpoint.
3181	*
3182	* @link http://archipelago.phrasewise.com/rsd
3183	* @since 2.0.0
3184	*/
3185	function rsd_link() {
3186	echo '<link rel="EditURI" type="application/rsd+xml" title="RSD" href="' . esc_url( site_url( 'xmlrpc.php?rsd', 'rpc' ) ) . '" />' . "\n";
3187	}
3188
3189	/**
3190	* Display the link to the Windows Live Writer manifest file.
3191	*
3192	* @link https://msdn.microsoft.com/en-us/library/bb463265.aspx
3193	* @since 2.3.1
3194	*/
3195	function wlwmanifest_link() {
3196	echo '<link rel="wlwmanifest" type="application/wlwmanifest+xml" href="' . includes_url( 'wlwmanifest.xml' ) . '" /> ' . "\n";
3197	}
3198
3199	/**
3200	* Displays a referrer strict-origin-when-cross-origin meta tag.
3201	*
3202	* Outputs a referrer origin-when-cross-origin meta tag that tells the browser not to send the full
3203	* url as a referrer to other sites when cross-origin assets are loaded.
3204	*
3205	* Typical usage is as a wp_head callback. add_action( 'wp_head', 'wp_strict_cross_origin_referrer' );
3206	*
3207	* @since 5.7.0
3208	*/
3209	function wp_strict_cross_origin_referrer() {
3210	?>
3211	<meta name='referrer' content='strict-origin-when-cross-origin' />
3212	<?php
3213	}
3214
3215	/**
3216	* Display site icon meta tags.
3217	*
3218	* @since 4.3.0
3219	*
3220	* @link https://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#rel-icon HTML5 specification link icon.
3221	*/
3222	function wp_site_icon() {
3223	if ( ! has_site_icon() && ! is_customize_preview() ) {
3224	return;
3225	}
3226
3227	$meta_tags = array();
3228	$icon_32 = get_site_icon_url( 32 );
3229	if ( empty( $icon_32 ) && is_customize_preview() ) {
3230	$icon_32 = '/favicon.ico'; // Serve default favicon URL in customizer so element can be updated for preview.
3231	}
3232	if ( $icon_32 ) {
3233	$meta_tags[] = sprintf( '<link rel="icon" href="%s" sizes="32x32" />', esc_url( $icon_32 ) );
3234	}
3235	$icon_192 = get_site_icon_url( 192 );
3236	if ( $icon_192 ) {
3237	$meta_tags[] = sprintf( '<link rel="icon" href="%s" sizes="192x192" />', esc_url( $icon_192 ) );
3238	}
3239	$icon_180 = get_site_icon_url( 180 );
3240	if ( $icon_180 ) {
3241	$meta_tags[] = sprintf( '<link rel="apple-touch-icon" href="%s" />', esc_url( $icon_180 ) );
3242	}
3243	$icon_270 = get_site_icon_url( 270 );
3244	if ( $icon_270 ) {
3245	$meta_tags[] = sprintf( '<meta name="msapplication-TileImage" content="%s" />', esc_url( $icon_270 ) );
3246	}
3247
3248	/**
3249	* Filters the site icon meta tags, so plugins can add their own.
3250	*
3251	* @since 4.3.0
3252	*
3253	* @param string[] $meta_tags Array of Site Icon meta tags.
3254	*/
3255	$meta_tags = apply_filters( 'site_icon_meta_tags', $meta_tags );
3256	$meta_tags = array_filter( $meta_tags );
3257
3258	foreach ( $meta_tags as $meta_tag ) {
3259	echo "$meta_tag\n";
3260	}
3261	}
3262
3263	/**
3264	* Prints resource hints to browsers for pre-fetching, pre-rendering
3265	* and pre-connecting to web sites.
3266	*
3267	* Gives hints to browsers to prefetch specific pages or render them
3268	* in the background, to perform DNS lookups or to begin the connection
3269	* handshake (DNS, TCP, TLS) in the background.
3270	*
3271	* These performance improving indicators work by using `<link rel"…">`.
3272	*
3273	* @since 4.6.0
3274	*/
3275	function wp_resource_hints() {
3276	$hints = array(
3277	'dns-prefetch' => wp_dependencies_unique_hosts(),
3278	'preconnect' => array(),
3279	'prefetch' => array(),
3280	'prerender' => array(),
3281	);
3282
3283	/*
3284	* Add DNS prefetch for the Emoji CDN.
3285	* The path is removed in the foreach loop below.
3286	*/
3287	/** This filter is documented in wp-includes/formatting.php */
3288	$hints['dns-prefetch'][] = apply_filters( 'emoji_svg_url', 'https://s.w.org/images/core/emoji/13.0.0/svg/' );
3289
3290	foreach ( $hints as $relation_type => $urls ) {
3291	$unique_urls = array();
3292
3293	/**
3294	* Filters domains and URLs for resource hints of relation type.
3295	*
3296	* @since 4.6.0
3297	* @since 4.7.0 The `$urls` parameter accepts arrays of specific HTML attributes
3298	* as its child elements.
3299	*
3300	* @param array $urls {
3301	* Array of resources and their attributes, or URLs to print for resource hints.
3302	*
3303	* @type array\|string ...$0 {
3304	* Array of resource attributes, or a URL string.
3305	*
3306	* @type string $href URL to include in resource hints. Required.
3307	* @type string $as How the browser should treat the resource
3308	* (`script`, `style`, `image`, `document`, etc).
3309	* @type string $crossorigin Indicates the CORS policy of the specified resource.
3310	* @type float $pr Expected probability that the resource hint will be used.
3311	* @type string $type Type of the resource (`text/html`, `text/css`, etc).
3312	* }
3313	* }
3314	* @param string $relation_type The relation type the URLs are printed for,
3315	* e.g. 'preconnect' or 'prerender'.
3316	*/
3317	$urls = apply_filters( 'wp_resource_hints', $urls, $relation_type );
3318
3319	foreach ( $urls as $key => $url ) {
3320	$atts = array();
3321
3322	if ( is_array( $url ) ) {
3323	if ( isset( $url['href'] ) ) {
3324	$atts = $url;
3325	$url = $url['href'];
3326	} else {
3327	continue;
3328	}
3329	}
3330
3331	$url = esc_url( $url, array( 'http', 'https' ) );
3332
3333	if ( ! $url ) {
3334	continue;
3335	}
3336
3337	if ( isset( $unique_urls[ $url ] ) ) {
3338	continue;
3339	}
3340
3341	if ( in_array( $relation_type, array( 'preconnect', 'dns-prefetch' ), true ) ) {
3342	$parsed = wp_parse_url( $url );
3343
3344	if ( empty( $parsed['host'] ) ) {
3345	continue;
3346	}
3347
3348	if ( 'preconnect' === $relation_type && ! empty( $parsed['scheme'] ) ) {
3349	$url = $parsed['scheme'] . '://' . $parsed['host'];
3350	} else {
3351	// Use protocol-relative URLs for dns-prefetch or if scheme is missing.
3352	$url = '//' . $parsed['host'];
3353	}
3354	}
3355
3356	$atts['rel'] = $relation_type;
3357	$atts['href'] = $url;
3358
3359	$unique_urls[ $url ] = $atts;
3360	}
3361
3362	foreach ( $unique_urls as $atts ) {
3363	$html = '';
3364
3365	foreach ( $atts as $attr => $value ) {
3366	if ( ! is_scalar( $value )
3367	\|\| ( ! in_array( $attr, array( 'as', 'crossorigin', 'href', 'pr', 'rel', 'type' ), true ) && ! is_numeric( $attr ) )
3368	) {
3369
3370	continue;
3371	}
3372
3373	$value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
3374
3375	if ( ! is_string( $attr ) ) {
3376	$html .= " $value";
3377	} else {
3378	$html .= " $attr='$value'";
3379	}
3380	}
3381
3382	$html = trim( $html );
3383
3384	echo "<link $html />\n";
3385	}
3386	}
3387	}
3388
3389	/**
3390	* Retrieves a list of unique hosts of all enqueued scripts and styles.
3391	*
3392	* @since 4.6.0
3393	*
3394	* @return string[] A list of unique hosts of enqueued scripts and styles.
3395	*/
3396	function wp_dependencies_unique_hosts() {
3397	global $wp_scripts, $wp_styles;
3398
3399	$unique_hosts = array();
3400
3401	foreach ( array( $wp_scripts, $wp_styles ) as $dependencies ) {
3402	if ( $dependencies instanceof WP_Dependencies && ! empty( $dependencies->queue ) ) {
3403	foreach ( $dependencies->queue as $handle ) {
3404	if ( ! isset( $dependencies->registered[ $handle ] ) ) {
3405	continue;
3406	}
3407
3408	/* @var _WP_Dependency $dependency */
3409	$dependency = $dependencies->registered[ $handle ];
3410	$parsed = wp_parse_url( $dependency->src );
3411
3412	if ( ! empty( $parsed['host'] )
3413	&& ! in_array( $parsed['host'], $unique_hosts, true ) && $parsed['host'] !== $_SERVER['SERVER_NAME']
3414	) {
3415	$unique_hosts[] = $parsed['host'];
3416	}
3417	}
3418	}
3419	}
3420
3421	return $unique_hosts;
3422	}
3423
3424	/**
3425	* Whether the user can access the visual editor.
3426	*
3427	* Checks if the user can access the visual editor and that it's supported by the user's browser.
3428	*
3429	* @since 2.0.0
3430	*
3431	* @global bool $wp_rich_edit Whether the user can access the visual editor.
3432	* @global bool $is_gecko Whether the browser is Gecko-based.
3433	* @global bool $is_opera Whether the browser is Opera.
3434	* @global bool $is_safari Whether the browser is Safari.
3435	* @global bool $is_chrome Whether the browser is Chrome.
3436	* @global bool $is_IE Whether the browser is Internet Explorer.
3437	* @global bool $is_edge Whether the browser is Microsoft Edge.
3438	*
3439	* @return bool True if the user can access the visual editor, false otherwise.
3440	*/
3441	function user_can_richedit() {
3442	global $wp_rich_edit, $is_gecko, $is_opera, $is_safari, $is_chrome, $is_IE, $is_edge;
3443
3444	if ( ! isset( $wp_rich_edit ) ) {
3445	$wp_rich_edit = false;
3446
3447	if ( 'true' === get_user_option( 'rich_editing' ) \|\| ! is_user_logged_in() ) { // Default to 'true' for logged out users.
3448	if ( $is_safari ) {
3449	$wp_rich_edit = ! wp_is_mobile() \|\| ( preg_match( '!AppleWebKit/(\d+)!', $_SERVER['HTTP_USER_AGENT'], $match ) && (int) $match[1] >= 534 );
3450	} elseif ( $is_IE ) {
3451	$wp_rich_edit = ( strpos( $_SERVER['HTTP_USER_AGENT'], 'Trident/7.0;' ) !== false );
3452	} elseif ( $is_gecko \|\| $is_chrome \|\| $is_edge \|\| ( $is_opera && ! wp_is_mobile() ) ) {
3453	$wp_rich_edit = true;
3454	}
3455	}
3456	}
3457
3458	/**
3459	* Filters whether the user can access the visual editor.
3460	*
3461	* @since 2.1.0
3462	*
3463	* @param bool $wp_rich_edit Whether the user can access the visual editor.
3464	*/
3465	return apply_filters( 'user_can_richedit', $wp_rich_edit );
3466	}
3467
3468	/**
3469	* Find out which editor should be displayed by default.
3470	*
3471	* Works out which of the two editors to display as the current editor for a
3472	* user. The 'html' setting is for the "Text" editor tab.
3473	*
3474	* @since 2.5.0
3475	*
3476	* @return string Either 'tinymce', or 'html', or 'test'
3477	*/
3478	function wp_default_editor() {
3479	$r = user_can_richedit() ? 'tinymce' : 'html'; // Defaults.
3480	if ( wp_get_current_user() ) { // Look for cookie.
3481	$ed = get_user_setting( 'editor', 'tinymce' );
3482	$r = ( in_array( $ed, array( 'tinymce', 'html', 'test' ), true ) ) ? $ed : $r;
3483	}
3484
3485	/**
3486	* Filters which editor should be displayed by default.
3487	*
3488	* @since 2.5.0
3489	*
3490	* @param string $r Which editor should be displayed by default. Either 'tinymce', 'html', or 'test'.
3491	*/
3492	return apply_filters( 'wp_default_editor', $r );
3493	}
3494
3495	/**
3496	* Renders an editor.
3497	*
3498	* Using this function is the proper way to output all needed components for both TinyMCE and Quicktags.
3499	* _WP_Editors should not be used directly. See https://core.trac.wordpress.org/ticket/17144.
3500	*
3501	* NOTE: Once initialized the TinyMCE editor cannot be safely moved in the DOM. For that reason
3502	* running wp_editor() inside of a meta box is not a good idea unless only Quicktags is used.
3503	* On the post edit screen several actions can be used to include additional editors
3504	* containing TinyMCE: 'edit_page_form', 'edit_form_advanced' and 'dbx_post_sidebar'.
3505	* See https://core.trac.wordpress.org/ticket/19173 for more information.
3506	*
3507	* @see _WP_Editors::editor()
3508	* @see _WP_Editors::parse_settings()
3509	* @since 3.3.0
3510	*
3511	* @param string $content Initial content for the editor.
3512	* @param string $editor_id HTML ID attribute value for the textarea and TinyMCE.
3513	* Should not contain square brackets.
3514	* @param array $settings See _WP_Editors::parse_settings() for description.
3515	*/
3516	function wp_editor( $content, $editor_id, $settings = array() ) {
3517	if ( ! class_exists( '_WP_Editors', false ) ) {
3518	require ABSPATH . WPINC . '/class-wp-editor.php';
3519	}
3520	_WP_Editors::editor( $content, $editor_id, $settings );
3521	}
3522
3523	/**
3524	* Outputs the editor scripts, stylesheets, and default settings.
3525	*
3526	* The editor can be initialized when needed after page load.
3527	* See wp.editor.initialize() in wp-admin/js/editor.js for initialization options.
3528	*
3529	* @uses _WP_Editors
3530	* @since 4.8.0
3531	*/
3532	function wp_enqueue_editor() {
3533	if ( ! class_exists( '_WP_Editors', false ) ) {
3534	require ABSPATH . WPINC . '/class-wp-editor.php';
3535	}
3536
3537	_WP_Editors::enqueue_default_editor();
3538	}
3539
3540	/**
3541	* Enqueue assets needed by the code editor for the given settings.
3542	*
3543	* @since 4.9.0
3544	*
3545	* @see wp_enqueue_editor()
3546	* @see wp_get_code_editor_settings();
3547	* @see _WP_Editors::parse_settings()
3548	*
3549	* @param array $args {
3550	* Args.
3551	*
3552	* @type string $type The MIME type of the file to be edited.
3553	* @type string $file Filename to be edited. Extension is used to sniff the type. Can be supplied as alternative to `$type` param.
3554	* @type WP_Theme $theme Theme being edited when on theme editor.
3555	* @type string $plugin Plugin being edited when on plugin editor.
3556	* @type array $codemirror Additional CodeMirror setting overrides.
3557	* @type array $csslint CSSLint rule overrides.
3558	* @type array $jshint JSHint rule overrides.
3559	* @type array $htmlhint HTMLHint rule overrides.
3560	* }
3561	* @return array\|false Settings for the enqueued code editor, or false if the editor was not enqueued.
3562	*/
3563	function wp_enqueue_code_editor( $args ) {
3564	if ( is_user_logged_in() && 'false' === wp_get_current_user()->syntax_highlighting ) {
3565	return false;
3566	}
3567
3568	$settings = wp_get_code_editor_settings( $args );
3569
3570	if ( empty( $settings ) \|\| empty( $settings['codemirror'] ) ) {
3571	return false;
3572	}
3573
3574	wp_enqueue_script( 'code-editor' );
3575	wp_enqueue_style( 'code-editor' );
3576
3577	if ( isset( $settings['codemirror']['mode'] ) ) {
3578	$mode = $settings['codemirror']['mode'];
3579	if ( is_string( $mode ) ) {
3580	$mode = array(
3581	'name' => $mode,
3582	);
3583	}
3584
3585	if ( ! empty( $settings['codemirror']['lint'] ) ) {
3586	switch ( $mode['name'] ) {
3587	case 'css':
3588	case 'text/css':
3589	case 'text/x-scss':
3590	case 'text/x-less':
3591	wp_enqueue_script( 'csslint' );
3592	break;
3593	case 'htmlmixed':
3594	case 'text/html':
3595	case 'php':
3596	case 'application/x-httpd-php':
3597	case 'text/x-php':
3598	wp_enqueue_script( 'htmlhint' );
3599	wp_enqueue_script( 'csslint' );
3600	wp_enqueue_script( 'jshint' );
3601	if ( ! current_user_can( 'unfiltered_html' ) ) {
3602	wp_enqueue_script( 'htmlhint-kses' );
3603	}
3604	break;
3605	case 'javascript':
3606	case 'application/ecmascript':
3607	case 'application/json':
3608	case 'application/javascript':
3609	case 'application/ld+json':
3610	case 'text/typescript':
3611	case 'application/typescript':
3612	wp_enqueue_script( 'jshint' );
3613	wp_enqueue_script( 'jsonlint' );
3614	break;
3615	}
3616	}
3617	}
3618
3619	wp_add_inline_script( 'code-editor', sprintf( 'jQuery.extend( wp.codeEditor.defaultSettings, %s );', wp_json_encode( $settings ) ) );
3620
3621	/**
3622	* Fires when scripts and styles are enqueued for the code editor.
3623	*
3624	* @since 4.9.0
3625	*
3626	* @param array $settings Settings for the enqueued code editor.
3627	*/
3628	do_action( 'wp_enqueue_code_editor', $settings );
3629
3630	return $settings;
3631	}
3632
3633	/**
3634	* Generate and return code editor settings.
3635	*
3636	* @since 5.0.0
3637	*
3638	* @see wp_enqueue_code_editor()
3639	*
3640	* @param array $args {
3641	* Args.
3642	*
3643	* @type string $type The MIME type of the file to be edited.
3644	* @type string $file Filename to be edited. Extension is used to sniff the type. Can be supplied as alternative to `$type` param.
3645	* @type WP_Theme $theme Theme being edited when on theme editor.
3646	* @type string $plugin Plugin being edited when on plugin editor.
3647	* @type array $codemirror Additional CodeMirror setting overrides.
3648	* @type array $csslint CSSLint rule overrides.
3649	* @type array $jshint JSHint rule overrides.
3650	* @type array $htmlhint HTMLHint rule overrides.
3651	* }
3652	* @return array\|false Settings for the code editor.
3653	*/
3654	function wp_get_code_editor_settings( $args ) {
3655	$settings = array(
3656	'codemirror' => array(
3657	'indentUnit' => 4,
3658	'indentWithTabs' => true,
3659	'inputStyle' => 'contenteditable',
3660	'lineNumbers' => true,
3661	'lineWrapping' => true,
3662	'styleActiveLine' => true,
3663	'continueComments' => true,
3664	'extraKeys' => array(
3665	'Ctrl-Space' => 'autocomplete',
3666	'Ctrl-/' => 'toggleComment',
3667	'Cmd-/' => 'toggleComment',
3668	'Alt-F' => 'findPersistent',
3669	'Ctrl-F' => 'findPersistent',
3670	'Cmd-F' => 'findPersistent',
3671	),
3672	'direction' => 'ltr', // Code is shown in LTR even in RTL languages.
3673	'gutters' => array(),
3674	),
3675	'csslint' => array(
3676	'errors' => true, // Parsing errors.
3677	'box-model' => true,
3678	'display-property-grouping' => true,
3679	'duplicate-properties' => true,
3680	'known-properties' => true,
3681	'outline-none' => true,
3682	),
3683	'jshint' => array(
3684	// The following are copied from <https://github.com/WordPress/wordpress-develop/blob/4.8.1/.jshintrc>.
3685	'boss' => true,
3686	'curly' => true,
3687	'eqeqeq' => true,
3688	'eqnull' => true,
3689	'es3' => true,
3690	'expr' => true,
3691	'immed' => true,
3692	'noarg' => true,
3693	'nonbsp' => true,
3694	'onevar' => true,
3695	'quotmark' => 'single',
3696	'trailing' => true,
3697	'undef' => true,
3698	'unused' => true,
3699
3700	'browser' => true,
3701
3702	'globals' => array(
3703	'_' => false,
3704	'Backbone' => false,
3705	'jQuery' => false,
3706	'JSON' => false,
3707	'wp' => false,
3708	),
3709	),
3710	'htmlhint' => array(
3711	'tagname-lowercase' => true,
3712	'attr-lowercase' => true,
3713	'attr-value-double-quotes' => false,
3714	'doctype-first' => false,
3715	'tag-pair' => true,
3716	'spec-char-escape' => true,
3717	'id-unique' => true,
3718	'src-not-empty' => true,
3719	'attr-no-duplication' => true,
3720	'alt-require' => true,
3721	'space-tab-mixed-disabled' => 'tab',
3722	'attr-unsafe-chars' => true,
3723	),
3724	);
3725
3726	$type = '';
3727	if ( isset( $args['type'] ) ) {
3728	$type = $args['type'];
3729
3730	// Remap MIME types to ones that CodeMirror modes will recognize.
3731	if ( 'application/x-patch' === $type \|\| 'text/x-patch' === $type ) {
3732	$type = 'text/x-diff';
3733	}
3734	} elseif ( isset( $args['file'] ) && false !== strpos( basename( $args['file'] ), '.' ) ) {
3735	$extension = strtolower( pathinfo( $args['file'], PATHINFO_EXTENSION ) );
3736	foreach ( wp_get_mime_types() as $exts => $mime ) {
3737	if ( preg_match( '!^(' . $exts . ')$!i', $extension ) ) {
3738	$type = $mime;
3739	break;
3740	}
3741	}
3742
3743	// Supply any types that are not matched by wp_get_mime_types().
3744	if ( empty( $type ) ) {
3745	switch ( $extension ) {
3746	case 'conf':
3747	$type = 'text/nginx';
3748	break;
3749	case 'css':
3750	$type = 'text/css';
3751	break;
3752	case 'diff':
3753	case 'patch':
3754	$type = 'text/x-diff';
3755	break;
3756	case 'html':
3757	case 'htm':
3758	$type = 'text/html';
3759	break;
3760	case 'http':
3761	$type = 'message/http';
3762	break;
3763	case 'js':
3764	$type = 'text/javascript';
3765	break;
3766	case 'json':
3767	$type = 'application/json';
3768	break;
3769	case 'jsx':
3770	$type = 'text/jsx';
3771	break;
3772	case 'less':
3773	$type = 'text/x-less';
3774	break;
3775	case 'md':
3776	$type = 'text/x-gfm';
3777	break;
3778	case 'php':
3779	case 'phtml':
3780	case 'php3':
3781	case 'php4':
3782	case 'php5':
3783	case 'php7':
3784	case 'phps':
3785	$type = 'application/x-httpd-php';
3786	break;
3787	case 'scss':
3788	$type = 'text/x-scss';
3789	break;
3790	case 'sass':
3791	$type = 'text/x-sass';
3792	break;
3793	case 'sh':
3794	case 'bash':
3795	$type = 'text/x-sh';
3796	break;
3797	case 'sql':
3798	$type = 'text/x-sql';
3799	break;
3800	case 'svg':
3801	$type = 'application/svg+xml';
3802	break;
3803	case 'xml':
3804	$type = 'text/xml';
3805	break;
3806	case 'yml':
3807	case 'yaml':
3808	$type = 'text/x-yaml';
3809	break;
3810	case 'txt':
3811	default:
3812	$type = 'text/plain';
3813	break;
3814	}
3815	}
3816	}
3817
3818	if ( in_array( $type, array( 'text/css', 'text/x-scss', 'text/x-less', 'text/x-sass' ), true ) ) {
3819	$settings['codemirror'] = array_merge(
3820	$settings['codemirror'],
3821	array(
3822	'mode' => $type,
3823	'lint' => false,
3824	'autoCloseBrackets' => true,
3825	'matchBrackets' => true,
3826	)
3827	);
3828	} elseif ( 'text/x-diff' === $type ) {
3829	$settings['codemirror'] = array_merge(
3830	$settings['codemirror'],
3831	array(
3832	'mode' => 'diff',
3833	)
3834	);
3835	} elseif ( 'text/html' === $type ) {
3836	$settings['codemirror'] = array_merge(
3837	$settings['codemirror'],
3838	array(
3839	'mode' => 'htmlmixed',
3840	'lint' => true,
3841	'autoCloseBrackets' => true,
3842	'autoCloseTags' => true,
3843	'matchTags' => array(
3844	'bothTags' => true,
3845	),
3846	)
3847	);
3848
3849	if ( ! current_user_can( 'unfiltered_html' ) ) {
3850	$settings['htmlhint']['kses'] = wp_kses_allowed_html( 'post' );
3851	}
3852	} elseif ( 'text/x-gfm' === $type ) {
3853	$settings['codemirror'] = array_merge(
3854	$settings['codemirror'],
3855	array(
3856	'mode' => 'gfm',
3857	'highlightFormatting' => true,
3858	)
3859	);
3860	} elseif ( 'application/javascript' === $type \|\| 'text/javascript' === $type ) {
3861	$settings['codemirror'] = array_merge(
3862	$settings['codemirror'],
3863	array(
3864	'mode' => 'javascript',
3865	'lint' => true,
3866	'autoCloseBrackets' => true,
3867	'matchBrackets' => true,
3868	)
3869	);
3870	} elseif ( false !== strpos( $type, 'json' ) ) {
3871	$settings['codemirror'] = array_merge(
3872	$settings['codemirror'],
3873	array(
3874	'mode' => array(
3875	'name' => 'javascript',
3876	),
3877	'lint' => true,
3878	'autoCloseBrackets' => true,
3879	'matchBrackets' => true,
3880	)
3881	);
3882	if ( 'application/ld+json' === $type ) {
3883	$settings['codemirror']['mode']['jsonld'] = true;
3884	} else {
3885	$settings['codemirror']['mode']['json'] = true;
3886	}
3887	} elseif ( false !== strpos( $type, 'jsx' ) ) {
3888	$settings['codemirror'] = array_merge(
3889	$settings['codemirror'],
3890	array(
3891	'mode' => 'jsx',
3892	'autoCloseBrackets' => true,
3893	'matchBrackets' => true,
3894	)
3895	);
3896	} elseif ( 'text/x-markdown' === $type ) {
3897	$settings['codemirror'] = array_merge(
3898	$settings['codemirror'],
3899	array(
3900	'mode' => 'markdown',
3901	'highlightFormatting' => true,
3902	)
3903	);
3904	} elseif ( 'text/nginx' === $type ) {
3905	$settings['codemirror'] = array_merge(
3906	$settings['codemirror'],
3907	array(
3908	'mode' => 'nginx',
3909	)
3910	);
3911	} elseif ( 'application/x-httpd-php' === $type ) {
3912	$settings['codemirror'] = array_merge(
3913	$settings['codemirror'],
3914	array(
3915	'mode' => 'php',
3916	'autoCloseBrackets' => true,
3917	'autoCloseTags' => true,
3918	'matchBrackets' => true,
3919	'matchTags' => array(
3920	'bothTags' => true,
3921	),
3922	)
3923	);
3924	} elseif ( 'text/x-sql' === $type \|\| 'text/x-mysql' === $type ) {
3925	$settings['codemirror'] = array_merge(
3926	$settings['codemirror'],
3927	array(
3928	'mode' => 'sql',
3929	'autoCloseBrackets' => true,
3930	'matchBrackets' => true,
3931	)
3932	);
3933	} elseif ( false !== strpos( $type, 'xml' ) ) {
3934	$settings['codemirror'] = array_merge(
3935	$settings['codemirror'],
3936	array(
3937	'mode' => 'xml',
3938	'autoCloseBrackets' => true,
3939	'autoCloseTags' => true,
3940	'matchTags' => array(
3941	'bothTags' => true,
3942	),
3943	)
3944	);
3945	} elseif ( 'text/x-yaml' === $type ) {
3946	$settings['codemirror'] = array_merge(
3947	$settings['codemirror'],
3948	array(
3949	'mode' => 'yaml',
3950	)
3951	);
3952	} else {
3953	$settings['codemirror']['mode'] = $type;
3954	}
3955
3956	if ( ! empty( $settings['codemirror']['lint'] ) ) {
3957	$settings['codemirror']['gutters'][] = 'CodeMirror-lint-markers';
3958	}
3959
3960	// Let settings supplied via args override any defaults.
3961	foreach ( wp_array_slice_assoc( $args, array( 'codemirror', 'csslint', 'jshint', 'htmlhint' ) ) as $key => $value ) {
3962	$settings[ $key ] = array_merge(
3963	$settings[ $key ],
3964	$value
3965	);
3966	}
3967
3968	/**
3969	* Filters settings that are passed into the code editor.
3970	*
3971	* Returning a falsey value will disable the syntax-highlighting code editor.
3972	*
3973	* @since 4.9.0
3974	*
3975	* @param array $settings The array of settings passed to the code editor.
3976	* A falsey value disables the editor.
3977	* @param array $args {
3978	* Args passed when calling `get_code_editor_settings()`.
3979	*
3980	* @type string $type The MIME type of the file to be edited.
3981	* @type string $file Filename being edited.
3982	* @type WP_Theme $theme Theme being edited when on theme editor.
3983	* @type string $plugin Plugin being edited when on plugin editor.
3984	* @type array $codemirror Additional CodeMirror setting overrides.
3985	* @type array $csslint CSSLint rule overrides.
3986	* @type array $jshint JSHint rule overrides.
3987	* @type array $htmlhint HTMLHint rule overrides.
3988	* }
3989	*/
3990	return apply_filters( 'wp_code_editor_settings', $settings, $args );
3991	}
3992
3993	/**
3994	* Retrieves the contents of the search WordPress query variable.
3995	*
3996	* The search query string is passed through esc_attr() to ensure that it is safe
3997	* for placing in an HTML attribute.
3998	*
3999	* @since 2.3.0
4000	*
4001	* @param bool $escaped Whether the result is escaped. Default true.
4002	* Only use when you are later escaping it. Do not use unescaped.
4003	* @return string
4004	*/
4005	function get_search_query( $escaped = true ) {
4006	/**
4007	* Filters the contents of the search query variable.
4008	*
4009	* @since 2.3.0
4010	*
4011	* @param mixed $search Contents of the search query variable.
4012	*/
4013	$query = apply_filters( 'get_search_query', get_query_var( 's' ) );
4014
4015	if ( $escaped ) {
4016	$query = esc_attr( $query );
4017	}
4018	return $query;
4019	}
4020
4021	/**
4022	* Displays the contents of the search query variable.
4023	*
4024	* The search query string is passed through esc_attr() to ensure that it is safe
4025	* for placing in an HTML attribute.
4026	*
4027	* @since 2.1.0
4028	*/
4029	function the_search_query() {
4030	/**
4031	* Filters the contents of the search query variable for display.
4032	*
4033	* @since 2.3.0
4034	*
4035	* @param mixed $search Contents of the search query variable.
4036	*/
4037	echo esc_attr( apply_filters( 'the_search_query', get_search_query( false ) ) );
4038	}
4039
4040	/**
4041	* Gets the language attributes for the 'html' tag.
4042	*
4043	* Builds up a set of HTML attributes containing the text direction and language
4044	* information for the page.
4045	*
4046	* @since 4.3.0
4047	*
4048	* @param string $doctype Optional. The type of HTML document. Accepts 'xhtml' or 'html'. Default 'html'.
4049	*/
4050	function get_language_attributes( $doctype = 'html' ) {
4051	$attributes = array();
4052
4053	if ( function_exists( 'is_rtl' ) && is_rtl() ) {
4054	$attributes[] = 'dir="rtl"';
4055	}
4056
4057	$lang = get_bloginfo( 'language' );
4058	if ( $lang ) {
4059	if ( 'text/html' === get_option( 'html_type' ) \|\| 'html' === $doctype ) {
4060	$attributes[] = 'lang="' . esc_attr( $lang ) . '"';
4061	}
4062
4063	if ( 'text/html' !== get_option( 'html_type' ) \|\| 'xhtml' === $doctype ) {
4064	$attributes[] = 'xml:lang="' . esc_attr( $lang ) . '"';
4065	}
4066	}
4067
4068	$output = implode( ' ', $attributes );
4069
4070	/**
4071	* Filters the language attributes for display in the 'html' tag.
4072	*
4073	* @since 2.5.0
4074	* @since 4.3.0 Added the `$doctype` parameter.
4075	*
4076	* @param string $output A space-separated list of language attributes.
4077	* @param string $doctype The type of HTML document (xhtml\|html).
4078	*/
4079	return apply_filters( 'language_attributes', $output, $doctype );
4080	}
4081
4082	/**
4083	* Displays the language attributes for the 'html' tag.
4084	*
4085	* Builds up a set of HTML attributes containing the text direction and language
4086	* information for the page.
4087	*
4088	* @since 2.1.0
4089	* @since 4.3.0 Converted into a wrapper for get_language_attributes().
4090	*
4091	* @param string $doctype Optional. The type of HTML document. Accepts 'xhtml' or 'html'. Default 'html'.
4092	*/
4093	function language_attributes( $doctype = 'html' ) {
4094	echo get_language_attributes( $doctype );
4095	}
4096
4097	/**
4098	* Retrieves paginated links for archive post pages.
4099	*
4100	* Technically, the function can be used to create paginated link list for any
4101	* area. The 'base' argument is used to reference the url, which will be used to
4102	* create the paginated links. The 'format' argument is then used for replacing
4103	* the page number. It is however, most likely and by default, to be used on the
4104	* archive post pages.
4105	*
4106	* The 'type' argument controls format of the returned value. The default is
4107	* 'plain', which is just a string with the links separated by a newline
4108	* character. The other possible values are either 'array' or 'list'. The
4109	* 'array' value will return an array of the paginated link list to offer full
4110	* control of display. The 'list' value will place all of the paginated links in
4111	* an unordered HTML list.
4112	*
4113	* The 'total' argument is the total amount of pages and is an integer. The
4114	* 'current' argument is the current page number and is also an integer.
4115	*
4116	* An example of the 'base' argument is "http://example.com/all_posts.php%_%"
4117	* and the '%_%' is required. The '%_%' will be replaced by the contents of in
4118	* the 'format' argument. An example for the 'format' argument is "?page=%#%"
4119	* and the '%#%' is also required. The '%#%' will be replaced with the page
4120	* number.
4121	*
4122	* You can include the previous and next links in the list by setting the
4123	* 'prev_next' argument to true, which it is by default. You can set the
4124	* previous text, by using the 'prev_text' argument. You can set the next text
4125	* by setting the 'next_text' argument.
4126	*
4127	* If the 'show_all' argument is set to true, then it will show all of the pages
4128	* instead of a short list of the pages near the current page. By default, the
4129	* 'show_all' is set to false and controlled by the 'end_size' and 'mid_size'
4130	* arguments. The 'end_size' argument is how many numbers on either the start
4131	* and the end list edges, by default is 1. The 'mid_size' argument is how many
4132	* numbers to either side of current page, but not including current page.
4133	*
4134	* It is possible to add query vars to the link by using the 'add_args' argument
4135	* and see add_query_arg() for more information.
4136	*
4137	* The 'before_page_number' and 'after_page_number' arguments allow users to
4138	* augment the links themselves. Typically this might be to add context to the
4139	* numbered links so that screen reader users understand what the links are for.
4140	* The text strings are added before and after the page number - within the
4141	* anchor tag.
4142	*
4143	* @since 2.1.0
4144	* @since 4.9.0 Added the `aria_current` argument.
4145	*
4146	* @global WP_Query $wp_query WordPress Query object.
4147	* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
4148	*
4149	* @param string\|array $args {
4150	* Optional. Array or string of arguments for generating paginated links for archives.
4151	*
4152	* @type string $base Base of the paginated url. Default empty.
4153	* @type string $format Format for the pagination structure. Default empty.
4154	* @type int $total The total amount of pages. Default is the value WP_Query's
4155	* `max_num_pages` or 1.
4156	* @type int $current The current page number. Default is 'paged' query var or 1.
4157	* @type string $aria_current The value for the aria-current attribute. Possible values are 'page',
4158	* 'step', 'location', 'date', 'time', 'true', 'false'. Default is 'page'.
4159	* @type bool $show_all Whether to show all pages. Default false.
4160	* @type int $end_size How many numbers on either the start and the end list edges.
4161	* Default 1.
4162	* @type int $mid_size How many numbers to either side of the current pages. Default 2.
4163	* @type bool $prev_next Whether to include the previous and next links in the list. Default true.
4164	* @type bool $prev_text The previous page text. Default '« Previous'.
4165	* @type bool $next_text The next page text. Default 'Next »'.
4166	* @type string $type Controls format of the returned value. Possible values are 'plain',
4167	* 'array' and 'list'. Default is 'plain'.
4168	* @type array $add_args An array of query args to add. Default false.
4169	* @type string $add_fragment A string to append to each link. Default empty.
4170	* @type string $before_page_number A string to appear before the page number. Default empty.
4171	* @type string $after_page_number A string to append after the page number. Default empty.
4172	* }
4173	* @return string\|array\|void String of page links or array of page links, depending on 'type' argument.
4174	* Void if total number of pages is less than 2.
4175	*/
4176	function paginate_links( $args = '' ) {
4177	global $wp_query, $wp_rewrite;
4178
4179	// Setting up default values based on the current URL.
4180	$pagenum_link = html_entity_decode( get_pagenum_link() );
4181	$url_parts = explode( '?', $pagenum_link );
4182
4183	// Get max pages and current page out of the current query, if available.
4184	$total = isset( $wp_query->max_num_pages ) ? $wp_query->max_num_pages : 1;
4185	$current = get_query_var( 'paged' ) ? (int) get_query_var( 'paged' ) : 1;
4186
4187	// Append the format placeholder to the base URL.
4188	$pagenum_link = trailingslashit( $url_parts[0] ) . '%_%';
4189
4190	// URL base depends on permalink settings.
4191	$format = $wp_rewrite->using_index_permalinks() && ! strpos( $pagenum_link, 'index.php' ) ? 'index.php/' : '';
4192	$format .= $wp_rewrite->using_permalinks() ? user_trailingslashit( $wp_rewrite->pagination_base . '/%#%', 'paged' ) : '?paged=%#%';
4193
4194	$defaults = array(
4195	'base' => $pagenum_link, // http://example.com/all_posts.php%_% : %_% is replaced by format (below).
4196	'format' => $format, // ?page=%#% : %#% is replaced by the page number.
4197	'total' => $total,
4198	'current' => $current,
4199	'aria_current' => 'page',
4200	'show_all' => false,
4201	'prev_next' => true,
4202	'prev_text' => __( '« Previous' ),
4203	'next_text' => __( 'Next »' ),
4204	'end_size' => 1,
4205	'mid_size' => 2,
4206	'type' => 'plain',
4207	'add_args' => array(), // Array of query args to add.
4208	'add_fragment' => '',
4209	'before_page_number' => '',
4210	'after_page_number' => '',
4211	);
4212
4213	$args = wp_parse_args( $args, $defaults );
4214
4215	if ( ! is_array( $args['add_args'] ) ) {
4216	$args['add_args'] = array();
4217	}
4218
4219	// Merge additional query vars found in the original URL into 'add_args' array.
4220	if ( isset( $url_parts[1] ) ) {
4221	// Find the format argument.
4222	$format = explode( '?', str_replace( '%_%', $args['format'], $args['base'] ) );
4223	$format_query = isset( $format[1] ) ? $format[1] : '';
4224	wp_parse_str( $format_query, $format_args );
4225
4226	// Find the query args of the requested URL.
4227	wp_parse_str( $url_parts[1], $url_query_args );
4228
4229	// Remove the format argument from the array of query arguments, to avoid overwriting custom format.
4230	foreach ( $format_args as $format_arg => $format_arg_value ) {
4231	unset( $url_query_args[ $format_arg ] );
4232	}
4233
4234	$args['add_args'] = array_merge( $args['add_args'], urlencode_deep( $url_query_args ) );
4235	}
4236
4237	// Who knows what else people pass in $args.
4238	$total = (int) $args['total'];
4239	if ( $total < 2 ) {
4240	return;
4241	}
4242	$current = (int) $args['current'];
4243	$end_size = (int) $args['end_size']; // Out of bounds? Make it the default.
4244	if ( $end_size < 1 ) {
4245	$end_size = 1;
4246	}
4247	$mid_size = (int) $args['mid_size'];
4248	if ( $mid_size < 0 ) {
4249	$mid_size = 2;
4250	}
4251
4252	$add_args = $args['add_args'];
4253	$r = '';
4254	$page_links = array();
4255	$dots = false;
4256
4257	if ( $args['prev_next'] && $current && 1 < $current ) :
4258	$link = str_replace( '%_%', 2 == $current ? '' : $args['format'], $args['base'] );
4259	$link = str_replace( '%#%', $current - 1, $link );
4260	if ( $add_args ) {
4261	$link = add_query_arg( $add_args, $link );
4262	}
4263	$link .= $args['add_fragment'];
4264
4265	$page_links[] = sprintf(
4266	'<a class="prev page-numbers" href="%s">%s</a>',
4267	/**
4268	* Filters the paginated links for the given archive pages.
4269	*
4270	* @since 3.0.0
4271	*
4272	* @param string $link The paginated link URL.
4273	*/
4274	esc_url( apply_filters( 'paginate_links', $link ) ),
4275	$args['prev_text']
4276	);
4277	endif;
4278
4279	for ( $n = 1; $n <= $total; $n++ ) :
4280	if ( $n == $current ) :
4281	$page_links[] = sprintf(
4282	'<span aria-current="%s" class="page-numbers current">%s</span>',
4283	esc_attr( $args['aria_current'] ),
4284	$args['before_page_number'] . number_format_i18n( $n ) . $args['after_page_number']
4285	);
4286
4287	$dots = true;
4288	else :
4289	if ( $args['show_all'] \|\| ( $n <= $end_size \|\| ( $current && $n >= $current - $mid_size && $n <= $current + $mid_size ) \|\| $n > $total - $end_size ) ) :
4290	$link = str_replace( '%_%', 1 == $n ? '' : $args['format'], $args['base'] );
4291	$link = str_replace( '%#%', $n, $link );
4292	if ( $add_args ) {
4293	$link = add_query_arg( $add_args, $link );
4294	}
4295	$link .= $args['add_fragment'];
4296
4297	$page_links[] = sprintf(
4298	'<a class="page-numbers" href="%s">%s</a>',
4299	/** This filter is documented in wp-includes/general-template.php */
4300	esc_url( apply_filters( 'paginate_links', $link ) ),
4301	$args['before_page_number'] . number_format_i18n( $n ) . $args['after_page_number']
4302	);
4303
4304	$dots = true;
4305	elseif ( $dots && ! $args['show_all'] ) :
4306	$page_links[] = '<span class="page-numbers dots">' . __( '…' ) . '</span>';
4307
4308	$dots = false;
4309	endif;
4310	endif;
4311	endfor;
4312
4313	if ( $args['prev_next'] && $current && $current < $total ) :
4314	$link = str_replace( '%_%', $args['format'], $args['base'] );
4315	$link = str_replace( '%#%', $current + 1, $link );
4316	if ( $add_args ) {
4317	$link = add_query_arg( $add_args, $link );
4318	}
4319	$link .= $args['add_fragment'];
4320
4321	$page_links[] = sprintf(
4322	'<a class="next page-numbers" href="%s">%s</a>',
4323	/** This filter is documented in wp-includes/general-template.php */
4324	esc_url( apply_filters( 'paginate_links', $link ) ),
4325	$args['next_text']
4326	);
4327	endif;
4328
4329	switch ( $args['type'] ) {
4330	case 'array':
4331	return $page_links;
4332
4333	case 'list':
4334	$r .= "<ul class='page-numbers'>\n\t<li>";
4335	$r .= implode( "</li>\n\t<li>", $page_links );
4336	$r .= "</li>\n</ul>\n";
4337	break;
4338
4339	default:
4340	$r = implode( "\n", $page_links );
4341	break;
4342	}
4343
4344	/**
4345	* Filters the HTML output of paginated links for archives.
4346	*
4347	* @since 5.7.0
4348	*
4349	* @param string $r HTML output.
4350	* @param array $args An array of arguments. See paginate_links()
4351	* for information on accepted arguments.
4352	*/
4353	$r = apply_filters( 'paginate_links_output', $r, $args );
4354
4355	return $r;
4356	}
4357
4358	/**
4359	* Registers an admin color scheme css file.
4360	*
4361	* Allows a plugin to register a new admin color scheme. For example:
4362	*
4363	* wp_admin_css_color( 'classic', __( 'Classic' ), admin_url( "css/colors-classic.css" ), array(
4364	* '#07273E', '#14568A', '#D54E21', '#2683AE'
4365	* ) );
4366	*
4367	* @since 2.5.0
4368	*
4369	* @global array $_wp_admin_css_colors
4370	*
4371	* @param string $key The unique key for this theme.
4372	* @param string $name The name of the theme.
4373	* @param string $url The URL of the CSS file containing the color scheme.
4374	* @param array $colors Optional. An array of CSS color definition strings which are used
4375	* to give the user a feel for the theme.
4376	* @param array $icons {
4377	* Optional. CSS color definitions used to color any SVG icons.
4378	*
4379	* @type string $base SVG icon base color.
4380	* @type string $focus SVG icon color on focus.
4381	* @type string $current SVG icon color of current admin menu link.
4382	* }
4383	*/
4384	function wp_admin_css_color( $key, $name, $url, $colors = array(), $icons = array() ) {
4385	global $_wp_admin_css_colors;
4386
4387	if ( ! isset( $_wp_admin_css_colors ) ) {
4388	$_wp_admin_css_colors = array();
4389	}
4390
4391	$_wp_admin_css_colors[ $key ] = (object) array(
4392	'name' => $name,
4393	'url' => $url,
4394	'colors' => $colors,
4395	'icon_colors' => $icons,
4396	);
4397	}
4398
4399	/**
4400	* Registers the default admin color schemes.
4401	*
4402	* Registers the initial set of eight color schemes in the Profile section
4403	* of the dashboard which allows for styling the admin menu and toolbar.
4404	*
4405	* @see wp_admin_css_color()
4406	*
4407	* @since 3.0.0
4408	*/
4409	function register_admin_color_schemes() {
4410	$suffix = is_rtl() ? '-rtl' : '';
4411	$suffix .= SCRIPT_DEBUG ? '' : '.min';
4412
4413	wp_admin_css_color(
4414	'fresh',
4415	_x( 'Default', 'admin color scheme' ),
4416	false,
4417	array( '#1d2327', '#2c3338', '#2271b1', '#72aee6' ),
4418	array(
4419	'base' => '#a7aaad',
4420	'focus' => '#72aee6',
4421	'current' => '#fff',
4422	)
4423	);
4424
4425	wp_admin_css_color(
4426	'light',
4427	_x( 'Light', 'admin color scheme' ),
4428	admin_url( "css/colors/light/colors$suffix.css" ),
4429	array( '#e5e5e5', '#999', '#d64e07', '#04a4cc' ),
4430	array(
4431	'base' => '#999',
4432	'focus' => '#ccc',
4433	'current' => '#ccc',
4434	)
4435	);
4436
4437	wp_admin_css_color(
4438	'modern',
4439	_x( 'Modern', 'admin color scheme' ),
4440	admin_url( "css/colors/modern/colors$suffix.css" ),
4441	array( '#1e1e1e', '#3858e9', '#33f078' ),
4442	array(
4443	'base' => '#f3f1f1',
4444	'focus' => '#fff',
4445	'current' => '#fff',
4446	)
4447	);
4448
4449	wp_admin_css_color(
4450	'blue',
4451	_x( 'Blue', 'admin color scheme' ),
4452	admin_url( "css/colors/blue/colors$suffix.css" ),
4453	array( '#096484', '#4796b3', '#52accc', '#74B6CE' ),
4454	array(
4455	'base' => '#e5f8ff',
4456	'focus' => '#fff',
4457	'current' => '#fff',
4458	)
4459	);
4460
4461	wp_admin_css_color(
4462	'midnight',
4463	_x( 'Midnight', 'admin color scheme' ),
4464	admin_url( "css/colors/midnight/colors$suffix.css" ),
4465	array( '#25282b', '#363b3f', '#69a8bb', '#e14d43' ),
4466	array(
4467	'base' => '#f1f2f3',
4468	'focus' => '#fff',
4469	'current' => '#fff',
4470	)
4471	);
4472
4473	wp_admin_css_color(
4474	'sunrise',
4475	_x( 'Sunrise', 'admin color scheme' ),
4476	admin_url( "css/colors/sunrise/colors$suffix.css" ),
4477	array( '#b43c38', '#cf4944', '#dd823b', '#ccaf0b' ),
4478	array(
4479	'base' => '#f3f1f1',
4480	'focus' => '#fff',
4481	'current' => '#fff',
4482	)
4483	);
4484
4485	wp_admin_css_color(
4486	'ectoplasm',
4487	_x( 'Ectoplasm', 'admin color scheme' ),
4488	admin_url( "css/colors/ectoplasm/colors$suffix.css" ),
4489	array( '#413256', '#523f6d', '#a3b745', '#d46f15' ),
4490	array(
4491	'base' => '#ece6f6',
4492	'focus' => '#fff',
4493	'current' => '#fff',
4494	)
4495	);
4496
4497	wp_admin_css_color(
4498	'ocean',
4499	_x( 'Ocean', 'admin color scheme' ),
4500	admin_url( "css/colors/ocean/colors$suffix.css" ),
4501	array( '#627c83', '#738e96', '#9ebaa0', '#aa9d88' ),
4502	array(
4503	'base' => '#f2fcff',
4504	'focus' => '#fff',
4505	'current' => '#fff',
4506	)
4507	);
4508
4509	wp_admin_css_color(
4510	'coffee',
4511	_x( 'Coffee', 'admin color scheme' ),
4512	admin_url( "css/colors/coffee/colors$suffix.css" ),
4513	array( '#46403c', '#59524c', '#c7a589', '#9ea476' ),
4514	array(
4515	'base' => '#f3f2f1',
4516	'focus' => '#fff',
4517	'current' => '#fff',
4518	)
4519	);
4520
4521	}
4522
4523	/**
4524	* Displays the URL of a WordPress admin CSS file.
4525	*
4526	* @see WP_Styles::_css_href and its {@see 'style_loader_src'} filter.
4527	*
4528	* @since 2.3.0
4529	*
4530	* @param string $file file relative to wp-admin/ without its ".css" extension.
4531	* @return string
4532	*/
4533	function wp_admin_css_uri( $file = 'wp-admin' ) {
4534	if ( defined( 'WP_INSTALLING' ) ) {
4535	$_file = "./$file.css";
4536	} else {
4537	$_file = admin_url( "$file.css" );
4538	}
4539	$_file = add_query_arg( 'version', get_bloginfo( 'version' ), $_file );
4540
4541	/**
4542	* Filters the URI of a WordPress admin CSS file.
4543	*
4544	* @since 2.3.0
4545	*
4546	* @param string $_file Relative path to the file with query arguments attached.
4547	* @param string $file Relative path to the file, minus its ".css" extension.
4548	*/
4549	return apply_filters( 'wp_admin_css_uri', $_file, $file );
4550	}
4551
4552	/**
4553	* Enqueues or directly prints a stylesheet link to the specified CSS file.
4554	*
4555	* "Intelligently" decides to enqueue or to print the CSS file. If the
4556	* {@see 'wp_print_styles'} action has not yet been called, the CSS file will be
4557	* enqueued. If the {@see 'wp_print_styles'} action has been called, the CSS link will
4558	* be printed. Printing may be forced by passing true as the $force_echo
4559	* (second) parameter.
4560	*
4561	* For backward compatibility with WordPress 2.3 calling method: If the $file
4562	* (first) parameter does not correspond to a registered CSS file, we assume
4563	* $file is a file relative to wp-admin/ without its ".css" extension. A
4564	* stylesheet link to that generated URL is printed.
4565	*
4566	* @since 2.3.0
4567	*
4568	* @param string $file Optional. Style handle name or file name (without ".css" extension) relative
4569	* to wp-admin/. Defaults to 'wp-admin'.
4570	* @param bool $force_echo Optional. Force the stylesheet link to be printed rather than enqueued.
4571	*/
4572	function wp_admin_css( $file = 'wp-admin', $force_echo = false ) {
4573	// For backward compatibility.
4574	$handle = 0 === strpos( $file, 'css/' ) ? substr( $file, 4 ) : $file;
4575
4576	if ( wp_styles()->query( $handle ) ) {
4577	if ( $force_echo \|\| did_action( 'wp_print_styles' ) ) {
4578	// We already printed the style queue. Print this one immediately.
4579	wp_print_styles( $handle );
4580	} else {
4581	// Add to style queue.
4582	wp_enqueue_style( $handle );
4583	}
4584	return;
4585	}
4586
4587	$stylesheet_link = sprintf(
4588	"<link rel='stylesheet' href='%s' type='text/css' />\n",
4589	esc_url( wp_admin_css_uri( $file ) )
4590	);
4591
4592	/**
4593	* Filters the stylesheet link to the specified CSS file.
4594	*
4595	* If the site is set to display right-to-left, the RTL stylesheet link
4596	* will be used instead.
4597	*
4598	* @since 2.3.0
4599	* @param string $stylesheet_link HTML link element for the stylesheet.
4600	* @param string $file Style handle name or filename (without ".css" extension)
4601	* relative to wp-admin/. Defaults to 'wp-admin'.
4602	*/
4603	echo apply_filters( 'wp_admin_css', $stylesheet_link, $file );
4604
4605	if ( function_exists( 'is_rtl' ) && is_rtl() ) {
4606	$rtl_stylesheet_link = sprintf(
4607	"<link rel='stylesheet' href='%s' type='text/css' />\n",
4608	esc_url( wp_admin_css_uri( "$file-rtl" ) )
4609	);
4610
4611	/** This filter is documented in wp-includes/general-template.php */
4612	echo apply_filters( 'wp_admin_css', $rtl_stylesheet_link, "$file-rtl" );
4613	}
4614	}
4615
4616	/**
4617	* Enqueues the default ThickBox js and css.
4618	*
4619	* If any of the settings need to be changed, this can be done with another js
4620	* file similar to media-upload.js. That file should
4621	* require array('thickbox') to ensure it is loaded after.
4622	*
4623	* @since 2.5.0
4624	*/
4625	function add_thickbox() {
4626	wp_enqueue_script( 'thickbox' );
4627	wp_enqueue_style( 'thickbox' );
4628
4629	if ( is_network_admin() ) {
4630	add_action( 'admin_head', '_thickbox_path_admin_subfolder' );
4631	}
4632	}
4633
4634	/**
4635	* Displays the XHTML generator that is generated on the wp_head hook.
4636	*
4637	* See {@see 'wp_head'}.
4638	*
4639	* @since 2.5.0
4640	*/
4641	function wp_generator() {
4642	/**
4643	* Filters the output of the XHTML generator tag.
4644	*
4645	* @since 2.5.0
4646	*
4647	* @param string $generator_type The XHTML generator.
4648	*/
4649	the_generator( apply_filters( 'wp_generator_type', 'xhtml' ) );
4650	}
4651
4652	/**
4653	* Display the generator XML or Comment for RSS, ATOM, etc.
4654	*
4655	* Returns the correct generator type for the requested output format. Allows
4656	* for a plugin to filter generators overall the {@see 'the_generator'} filter.
4657	*
4658	* @since 2.5.0
4659	*
4660	* @param string $type The type of generator to output - (html\|xhtml\|atom\|rss2\|rdf\|comment\|export).
4661	*/
4662	function the_generator( $type ) {
4663	/**
4664	* Filters the output of the XHTML generator tag for display.
4665	*
4666	* @since 2.5.0
4667	*
4668	* @param string $generator_type The generator output.
4669	* @param string $type The type of generator to output. Accepts 'html',
4670	* 'xhtml', 'atom', 'rss2', 'rdf', 'comment', 'export'.
4671	*/
4672	echo apply_filters( 'the_generator', get_the_generator( $type ), $type ) . "\n";
4673	}
4674
4675	/**
4676	* Creates the generator XML or Comment for RSS, ATOM, etc.
4677	*
4678	* Returns the correct generator type for the requested output format. Allows
4679	* for a plugin to filter generators on an individual basis using the
4680	* {@see 'get_the_generator_$type'} filter.
4681	*
4682	* @since 2.5.0
4683	*
4684	* @param string $type The type of generator to return - (html\|xhtml\|atom\|rss2\|rdf\|comment\|export).
4685	* @return string\|void The HTML content for the generator.
4686	*/
4687	function get_the_generator( $type = '' ) {
4688	if ( empty( $type ) ) {
4689
4690	$current_filter = current_filter();
4691	if ( empty( $current_filter ) ) {
4692	return;
4693	}
4694
4695	switch ( $current_filter ) {
4696	case 'rss2_head':
4697	case 'commentsrss2_head':
4698	$type = 'rss2';
4699	break;
4700	case 'rss_head':
4701	case 'opml_head':
4702	$type = 'comment';
4703	break;
4704	case 'rdf_header':
4705	$type = 'rdf';
4706	break;
4707	case 'atom_head':
4708	case 'comments_atom_head':
4709	case 'app_head':
4710	$type = 'atom';
4711	break;
4712	}
4713	}
4714
4715	switch ( $type ) {
4716	case 'html':
4717	$gen = '<meta name="generator" content="WordPress ' . esc_attr( get_bloginfo( 'version' ) ) . '">';
4718	break;
4719	case 'xhtml':
4720	$gen = '<meta name="generator" content="WordPress ' . esc_attr( get_bloginfo( 'version' ) ) . '" />';
4721	break;
4722	case 'atom':
4723	$gen = '<generator uri="https://wordpress.org/" version="' . esc_attr( get_bloginfo_rss( 'version' ) ) . '">WordPress</generator>';
4724	break;
4725	case 'rss2':
4726	$gen = '<generator>' . esc_url_raw( 'https://wordpress.org/?v=' . get_bloginfo_rss( 'version' ) ) . '</generator>';
4727	break;
4728	case 'rdf':
4729	$gen = '<admin:generatorAgent rdf:resource="' . esc_url_raw( 'https://wordpress.org/?v=' . get_bloginfo_rss( 'version' ) ) . '" />';
4730	break;
4731	case 'comment':
4732	$gen = '<!-- generator="WordPress/' . esc_attr( get_bloginfo( 'version' ) ) . '" -->';
4733	break;
4734	case 'export':
4735	$gen = '<!-- generator="WordPress/' . esc_attr( get_bloginfo_rss( 'version' ) ) . '" created="' . gmdate( 'Y-m-d H:i' ) . '" -->';
4736	break;
4737	}
4738
4739	/**
4740	* Filters the HTML for the retrieved generator type.
4741	*
4742	* The dynamic portion of the hook name, `$type`, refers to the generator type.
4743	*
4744	* Possible hook names include:
4745	*
4746	* - `get_the_generator_atom`
4747	* - `get_the_generator_comment`
4748	* - `get_the_generator_export`
4749	* - `get_the_generator_html`
4750	* - `get_the_generator_rdf`
4751	* - `get_the_generator_rss2`
4752	* - `get_the_generator_xhtml`
4753	*
4754	* @since 2.5.0
4755	*
4756	* @param string $gen The HTML markup output to wp_head().
4757	* @param string $type The type of generator. Accepts 'html', 'xhtml', 'atom',
4758	* 'rss2', 'rdf', 'comment', 'export'.
4759	*/
4760	return apply_filters( "get_the_generator_{$type}", $gen, $type );
4761	}
4762
4763	/**
4764	* Outputs the HTML checked attribute.
4765	*
4766	* Compares the first two arguments and if identical marks as checked
4767	*
4768	* @since 1.0.0
4769	*
4770	* @param mixed $checked One of the values to compare
4771	* @param mixed $current (true) The other value to compare if not just true
4772	* @param bool $echo Whether to echo or just return the string
4773	* @return string HTML attribute or empty string
4774	*/
4775	function checked( $checked, $current = true, $echo = true ) {
4776	return __checked_selected_helper( $checked, $current, $echo, 'checked' );
4777	}
4778
4779	/**
4780	* Outputs the HTML selected attribute.
4781	*
4782	* Compares the first two arguments and if identical marks as selected
4783	*
4784	* @since 1.0.0
4785	*
4786	* @param mixed $selected One of the values to compare
4787	* @param mixed $current (true) The other value to compare if not just true
4788	* @param bool $echo Whether to echo or just return the string
4789	* @return string HTML attribute or empty string
4790	*/
4791	function selected( $selected, $current = true, $echo = true ) {
4792	return __checked_selected_helper( $selected, $current, $echo, 'selected' );
4793	}
4794
4795	/**
4796	* Outputs the HTML disabled attribute.
4797	*
4798	* Compares the first two arguments and if identical marks as disabled
4799	*
4800	* @since 3.0.0
4801	*
4802	* @param mixed $disabled One of the values to compare
4803	* @param mixed $current (true) The other value to compare if not just true
4804	* @param bool $echo Whether to echo or just return the string
4805	* @return string HTML attribute or empty string
4806	*/
4807	function disabled( $disabled, $current = true, $echo = true ) {
4808	return __checked_selected_helper( $disabled, $current, $echo, 'disabled' );
4809	}
4810
4811	/**
4812	* Outputs the HTML readonly attribute.
4813	*
4814	* Compares the first two arguments and if identical marks as readonly
4815	*
4816	* @since 4.9.0
4817	*
4818	* @param mixed $readonly One of the values to compare
4819	* @param mixed $current (true) The other value to compare if not just true
4820	* @param bool $echo Whether to echo or just return the string
4821	* @return string HTML attribute or empty string
4822	*/
4823	function readonly( $readonly, $current = true, $echo = true ) {
4824	return __checked_selected_helper( $readonly, $current, $echo, 'readonly' );
4825	}
4826
4827	/**
4828	* Private helper function for checked, selected, disabled and readonly.
4829	*
4830	* Compares the first two arguments and if identical marks as $type
4831	*
4832	* @since 2.8.0
4833	* @access private
4834	*
4835	* @param mixed $helper One of the values to compare
4836	* @param mixed $current (true) The other value to compare if not just true
4837	* @param bool $echo Whether to echo or just return the string
4838	* @param string $type The type of checked\|selected\|disabled\|readonly we are doing
4839	* @return string HTML attribute or empty string
4840	*/
4841	function __checked_selected_helper( $helper, $current, $echo, $type ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionDoubleUnderscore,PHPCompatibility.FunctionNameRestrictions.ReservedFunctionNames.FunctionDoubleUnderscore
4842	if ( (string) $helper === (string) $current ) {
4843	$result = " $type='$type'";
4844	} else {
4845	$result = '';
4846	}
4847
4848	if ( $echo ) {
4849	echo $result;
4850	}
4851
4852	return $result;
4853	}
4854
4855	/**
4856	* Default settings for heartbeat
4857	*
4858	* Outputs the nonce used in the heartbeat XHR
4859	*
4860	* @since 3.6.0
4861	*
4862	* @param array $settings
4863	* @return array Heartbeat settings.
4864	*/
4865	function wp_heartbeat_settings( $settings ) {
4866	if ( ! is_admin() ) {
4867	$settings['ajaxurl'] = admin_url( 'admin-ajax.php', 'relative' );
4868	}
4869
4870	if ( is_user_logged_in() ) {
4871	$settings['nonce'] = wp_create_nonce( 'heartbeat-nonce' );
4872	}
4873
4874	return $settings;
4875	}

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