csscomb::get_sort_order PHP Method

    function get_sort_order($order_name = null)
    {
        $order = '';
        if ($order_name !== null) {
            if ($order_name == 'zen') {
                $this->set_sort_order($this->default_sort_order);
                foreach ($this->sort_order as $k => $prop) {
                    $order .= $prop . "\n";
                }
            }
            if ($order_name === 'yandex') {
                $this->set_sort_order($this->yandex_sort_order);
                foreach ($this->sort_order as $group) {
                    foreach ($group as $prop) {
                        $order .= $prop . "\n";
                    }
                    $order .= "\n";
                }
                $order = trim($order);
            }
        }
        return $order;
    }

<?php

if ($_SERVER['HTTP_REFERER'] != 'http://csscomb.com/online/' and $_SERVER['HTTP_REFERER'] != 'http://dev.csscomb.ru/online/' and $_SERVER['HTTP_REFERER'] != 'http://dev.csscomb.com/online/' and $_SERVER['HTTP_REFERER'] != 'http://csscomb.ru/online/') {
    die('Error 0');
}
require_once '../src/csscomb.php';
if ($_POST['code'] and $_POST['code'] != '') {
    $c = new csscomb();
    if ($_POST['order'] and $_POST['order'] != '') {
        $order = stripslashes($_POST['order']);
        echo $c->csscomb($_POST['code'], false, $order);
    } else {
        echo $c->csscomb($_POST['code'], false);
    }
}
if ($_POST['get_order'] and $_POST['get_order'] != '') {
    $c = new csscomb();
    echo $c->get_sort_order($_POST['get_order']);
}