-请教，微信小程序客服 $postStr =file_get_contents(“php://input”); 获取不到文件， 消息推送已经启用，如果openid填写好推正常，人工      客服也正常，是什么原因，谢谢！

 public function responseMsg()

    {    

//get post data, May be due to the different environments

      $postStr =file_get_contents(“php://input”);        

    if (empty($postStr))

{

    echo ‘$ivar1’ . " 为空或为 0。" . PHP_EOL;

}

else

{

    echo ‘$ivar1’ . " 不为空或不为 0。" . PHP_EOL;

}

       print_r($postStr);

      //extract post data

if (!empty($postStr)){

                /* libxml_disable_entity_loader is to prevent XML eXternal Entity Injection,

                   the best way is to check the validity of xml by yourself */

                libxml_disable_entity_loader(true);

              $postObj = simplexml_load_string($postStr, ‘SimpleXMLElement’, LIBXML_NOCDATA);

                $fromUsername =trim($postObj->FromUserName);

                echo $postObj;

                $toUsername = $postObj->ToUserName;

               // $keyword = trim($postObj->Content);

                //$time = time();               

                $appid =“wx778804e73c086080”;

$secret=“2b93a9c0916d3f1ce73b5e5be5216f2c”;

$gettoken=“https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={$appid}&secret={$secret}”;

$result=$this->httpGet($gettoken);

                $arr=json_decode($result,true);

               $token=$arr[“access_token”];

               //var_dump($result);

               $postmsg=“https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=”.$token;

                $textTpl=’{“touser”:’.$fromUsername.’,“msgtype”:“text”,“text”:{“content”: “Hello World你好世界”}}’;

              $resultStr=$this->posturl($postmsg,$textTpl);

                echo $resultStr;