ユーザtoken生成書き込みredisとjs書き込みクッキー

/**
 *   Token
 *   appId+uid       MD5  
 *
 */
private function setTokenAction($appId, $uid = 0, $sign = '') {
    $signArray = array('appId' => $appId, 'uid' => $uid, 'sign' => substr($sign, 0, 12));
    sort($signArray);
    $tokenSring = implode('', array_values($signArray));
    return md5($tokenSring);
}

// redis    

$life = 86400 * 7;
//  redis
$redis = new Comm_Redis();
$redis->set($key, $token, $life);
$redis->setArray($token, $userInfo, $life);
$userInfo['token'] = $token;

//       cookie

if( json.success == true ) {
                    var exp  = new Date();
                    exp.setTime(exp.getTime() + 84600 * 7 * 1000); //json.message.lifetime
                    document.cookie="token="+json.message.token+";expires="+exp.toGMTString()+";path=/;domain="+json.message.domain; 
//                    $('body').html(json.message);
//                    $('html').html(json.message);
                    window.location.reload();
                }