PHP - Get Request Uri

get_request_uri

function get_request_uri() {
    $url = 'http';
    if(isset($_SERVER['https']) && $_SERVER['https'] == 'on') {
        $url .= 's'; 
    }   

    $url .= '://';

    $url .= $_SERVER['SERVER_NAME'];

    if($_SERVER['SERVER_PORT'] !== '81') {
        $url .= ':' . $_SERVER['SERVER_PORT'];
    }   

    $url .= $_SERVER['REQUEST_URI'];
    return $url;
}