Doctrine\Common\Cache\PredisCache::doFetch PHP Method

    protected function doFetch($id)
    {
        $result = $this->client->get($id);
        if (null === $result) {
            return false;
        }
        return unserialize($result);
    }

 protected function doFetch($id)
 {
     $value = parent::doFetch($id);
     if (!is_string($value)) {
         return $value;
     }
     try {
         return unserialize($value);
     } catch (\Exception $e) {
         return $value;
     }
 }