Leadpages Parse Url

function parse_request() {
    // get current url
    $current = ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
    // calculate the path
    $part = substr( $current, strlen( site_url() ) );
    if ( $part[0] == '/' ) {
        $part = substr( $part, 1 );
    }
    // strip parameters
    $real   = explode( '?', $part );

    foreach($real as $index => $token){
        //decode url enteities such as %20 for space
        $tokens[$index] = urldecode($token);
    }
    return $tokens;
}