WeChat Public Platform - Today I was trying to customize php to reply to messages from the WeChat service account. I found that using the company's service account could not run normally, but using my own official account could automatically reply to messages.

Today I customized php to reply to messages from WeChat service account, and found that using the company’s service account cannot run normally, but using my own official account can automatically reply to messages
What could be the cause of this situation

<code><?php header('Content-type:text');
define("TOKEN", "weixin");
$wechatObj = new wechatCallbackapiTest();
if (isset($_GET['echostr'])) {
    $wechatObj->valid();
}else{
    $wechatObj->responseMsg();
}

class wechatCallbackapiTest
{
    public function valid()
    {
        $echoStr = $_GET["echostr"];
        if($this->checkSignature()){
            header('content-type:text');
            echo $echoStr;
            exit;
        }
    }

    private function checkSignature()
    {
        $signature = $_GET["signature"];
        $timestamp = $_GET["timestamp"];
        $nonce = $_GET["nonce"];

        $token = TOKEN;
        $tmpArr = array($token, $timestamp, $nonce);
        sort($tmpArr, SORT_STRING);
        $tmpStr = implode( $tmpArr );
        $tmpStr = sha1( $tmpStr );

        if( $tmpStr == $signature ){
            return true;
        }else{
            return false;
        }
    }

    public function responseMsg()
    {
        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];

        if (!empty($postStr)){
            $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
            $fromUsername = $postObj->FromUserName;
            $toUsername = $postObj->ToUserName;
            $keyword = trim($postObj->Content);
            $time = time();
            $textTpl = "<xml>
                        <tousername></tousername>
                        <fromusername></fromusername>
                        <createtime>%s</createtime>
                        <msgtype></msgtype>
                        <content></content>
                        <funcflag>0</funcflag>
                        </xml>";
            $msgType = "text";
            $contentStr = date("Y-m-d H:i:s",time())."\n\n".'hello';
            $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
            echo $resultStr;
        }else{
            echo "";
            exit;
        }
    }
}
?></code>

Reply content:

Today I customized php to reply to messages from WeChat service account, and found that using the company’s service account cannot run normally, but using my own official account can automatically reply to messages
What could be the cause of this situation

<code><?php header('Content-type:text');
define("TOKEN", "weixin");
$wechatObj = new wechatCallbackapiTest();
if (isset($_GET['echostr'])) {
    $wechatObj->valid();
}else{
    $wechatObj->responseMsg();
}

class wechatCallbackapiTest
{
    public function valid()
    {
        $echoStr = $_GET["echostr"];
        if($this->checkSignature()){
            header('content-type:text');
            echo $echoStr;
            exit;
        }
    }

    private function checkSignature()
    {
        $signature = $_GET["signature"];
        $timestamp = $_GET["timestamp"];
        $nonce = $_GET["nonce"];

        $token = TOKEN;
        $tmpArr = array($token, $timestamp, $nonce);
        sort($tmpArr, SORT_STRING);
        $tmpStr = implode( $tmpArr );
        $tmpStr = sha1( $tmpStr );

        if( $tmpStr == $signature ){
            return true;
        }else{
            return false;
        }
    }

    public function responseMsg()
    {
        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];

        if (!empty($postStr)){
            $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
            $fromUsername = $postObj->FromUserName;
            $toUsername = $postObj->ToUserName;
            $keyword = trim($postObj->Content);
            $time = time();
            $textTpl = "<xml>
                        <tousername></tousername>
                        <fromusername></fromusername>
                        <createtime>%s</createtime>
                        <msgtype></msgtype>
                        <content></content>
                        <funcflag>0</funcflag>
                        </xml>";
            $msgType = "text";
            $contentStr = date("Y-m-d H:i:s",time())."\n\n".'hello';
            $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
            echo $resultStr;
        }else{
            echo "";
            exit;
        }
    }
}
?></code>

You can first check whether your WeChat public account configuration information is configured in the code as the company’s information

Solved. The two public accounts chose different modes when binding URLs. If you choose 'safe mode', an error will be reported, but if you choose 'civilized mode', you can access it normally.