If you apply redirection in ALL your requests using commands at the Apache virtual host file like:
RewriteEngine On
RewriteCond "%{REQUEST_URI}" "!=/index.php"
RewriteRule "^/(.*)$" "index.php?$1" [NC,NE,L,QSA]
you should expect some deviations in your $_SERVER global.
Say, you send a url of: [hostname here]/a/b?x=1&y=2
which makes Apache to modify to: /index.php?/a/b?x=1&y=2
Now your $_SERVER global contains among others:
'REQUEST_URI' => '/a/b?x=1&y=2', it retains the initial url after the host
'QUERY_STRING' => 'a/b&x=1&y=2', notice how php replaces '?' with '&'
'SCRIPT_NAME' => '/index.php', as it was intended to be.
To test your $_SERVER global:
function serverArray(){
$arr = array();
foreach($_SERVER as $key=>$value)
$arr[] = ' \'' . $key . '\' => \'' . (isset($value)? $value : '-') . '\'';
return @\sort($arr)? '$_SERVER = array(<br />' . implode($arr, ',<br />') . '<br />);' : false;
}
echo serverArray();
