gistfile1.php

// Returns "?sort=title&limit=10" combined with any existing GET values
$query = URL::query(array('sort' => 'title', 'limit' => 10));


public static function query(array $params = NULL)
{
    if ($params === NULL)
    {
        // Use only the current parameters
        $params = $_GET;
    }
    else
    {
        // Merge the current and new parameters
        $params = array_merge($_GET, $params);
    }
 
    if (empty($params))
    {
        // No query parameters
        return '';
    }
 
    $query = http_build_query($params, '', '&');
 
    // Don't prepend '?' to an empty string
    return ($query === '') ? '' : '?'.$query;
}