$re = '/^(?<protocol>[a-z]{2,6}):\/\/((?<subdomain>[a-z0-9]{0,10}\.{1}){0,2}(?<domain>[a-z\-0-9]{1,30}){1}\.{1}(?<extension>[a-z]{1,10}){1}|(?<ipaddress>([0-9\.]{2,5}){3,8}))(?<port>\:[0-9]{1,6}){0,1}\/?(?<filepath>(?<path>[a-z0-9\-_%]{1,20}\/{1}){0,}(?<filename>[a-z0-9\-_]{1,20}\.{1}[a-z0-9]{2,6}){0,1}){0,1}(?<route>(\/{1}[a-z_0-9\-_]{1,20}){1,}){0,10}(?<query>\?{1}[a-z0-9%\+_\-&=\.@\!,\:]{0,200}){0,1}$/im';
$str = '';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php