微信公众号token 验证

1.

    public function callback(){
        $data = postMore([
            ['echostr', ''], //用户id
        ]);
//        $echoStr = $_GET["echostr"];
        //valid signature , option

        echo $data['echostr'];
//        exit;
////        if($this->checkSignature()){
////            echo $echoStr;
////            exit;
//        }
    }

?>