致命错误: Call to undefined method app\common\library\token\driver\Redis::ping()

thinkphp5链接redis，ping报错

代码如下：

protected $config = [
        'host' => '127.0.0.1',
        'port' => 6379,
        'password' => '',
        'select' => 1,
        'timeout' => 0,
        'expire' => 0,
        'persistent' => false,
        'prefix' => '',
    ] ;

    public function __construct()
    {
        $this->redis = new Redis($this->config);
        $this->hash_prefix = 'news_view_counts_';
        $this->field_prefix = 'news_';
        $this->date = date('Y-m-d');
    }

    public function index(){
        echo "Server is running: " . $this->redis->ping();
        dump($this->redis);
    }

thinkphp5 已封装好redis链接类，TP5自带的redis封装了一些简单的redis操作命令，适合key-value使用。要想使用原生语句操作redis，可添加一个方法，将redis实例暴露出去。

redis类位置：

\application\common\library\token\driver\Redis.php

添加如下代码：

    /*
     * 返回原生的redis对象
     * @return object
    */
    public function getHandler(){
        //$this 为thinkphp封装的redis对象
        //$this->handler 才能获取到原生的redis对象
        return $this->handler;
    }

    public function index(){
        $obj = $this->redis->getHandler();
        echo "Server is running: " . $obj->ping();
        dump($this->redis);
    }