不管传什么样的内容接口都可以通过，都返回的是，{"errcode":0,"errmsg":"ok"}，具体代码入下，access_token肯定没错，因为请求结果返回的是{"errcode":0,"errmsg":"ok"}

public function checkContent($content){
    $url='https://api.weixin.qq.com/wxa/msg_sec_check?access_token='.$this->getAccessToken();
    $client=new Client();
    $response=$client->request("POST",$url,[
        "json"=>[
            "content"=>$content
        ]
    ]);
    $contents = $response->getBody()->getContents();
    \Yii::error($contents,"error");
    $result=json_decode($contents,true);
    if($result['errcode']==87014){
        return false;
    }
    return true;
}