/**
* Returns an absolute URL for the given one
*
* @param string $url absilute or relative URL
* @return string
*/
public static function absoluteUrl($url)
{
if (empty($url)) {
return OpenID::selfUrl();
} else {
if (!preg_match('|^([^:]+)://|', $url)) {
if (preg_match('|^([^:]+)://([^:@]*(?:[:][^@]*)?@)?([^/:@?#]*)(?:[:]([^/?#]*))?(/[^?]*)?((?:[?](?:[^#]*))?(?:#.*)?)$|', OpenID::selfUrl(), $reg)) {
$scheme = $reg[1];
$auth = $reg[2];
$host = $reg[3];
$port = $reg[4];
$path = $reg[5];
$query = $reg[6];
if ($url[0] == '/') {
return $scheme . '://' . $auth . $host . (empty($port) ? '' : ':' . $port) . $url;
} else {
$dir = dirname($path);
return $scheme . '://' . $auth . $host . (empty($port) ? '' : ':' . $port) . (strlen($dir) > 1 ? $dir : '') . '/' . $url;
}
}
}
}
return $url;
}
