yii2 memcache 跨平台交互 数值无法统一

web\basic\config\web.php
........
    ‘components‘ => [
        ‘request‘ => [
            // !!! insert a secret key in the following (if it is empty) - this is required by cookie validation
            ‘cookieValidationKey‘ => ‘zhaoyang‘,
        ],
        ‘mecache‘ => [
            ‘class‘ => ‘yii\caching\MemCache‘,
            ‘useMemcached‘ =>0,
            ‘servers‘ => [
                [
                    ‘host‘ => ‘localhost‘,
                    ‘port‘ => 11211,
                ]
            ],
        ],
        ‘user‘ => [
            ‘identityClass‘ => ‘app\models\User‘,
            ‘enableAutoLogin‘ => true,
        ],
............

　$mecache = Yii::$app->mecache;　
   $mecache->set("key","value", 60);
   $mecache->get("key");

web\basic\vendor\yiisoft\yii2\caching\Cache.php
//重写2个方法, 读写都调用这个方法

public function myset($key, $value, $duration = 0, $dependency = null)
{
    return $this->setValue($key, $value, $duration);
}

public function myget($key)
{
    return $this->getValue($key);
}

    public function get($key)
    {
        $key = $this->buildKey($key);
        $value = $this->getValue($key);
        if ($value === false || $this->serializer === false) {
            return $value;
        } elseif ($this->serializer === null) {
            $value = unserialize($value);
        } else {
            $value = call_user_func($this->serializer[1], $value);
        }
        if (is_array($value) && !($value[1] instanceof Dependency && $value[1]->getHasChanged($this))) {
            return $value[0];
        } else {
            return false;
        }
    }


    public function set($key, $value, $duration = 0, $dependency = null)
    {
        if ($dependency !== null && $this->serializer !== false) {
            $dependency->evaluateDependency($this);
        }
        if ($this->serializer === null) {
            $value = serialize([$value, $dependency]);
        } elseif ($this->serializer !== false) {
            $value = call_user_func($this->serializer[0], [$value, $dependency]);
        }
        $key = $this->buildKey($key);

        return $this->setValue($key, $value, $duration);
    }