PHP 인터페이스를 사용하여 기업 WeChat 고객 서비스 기능을 개발하는 방법은 무엇입니까?

$corpid = "企业ID";
$corpsecret = "应用 Secret";
$url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$corpid&corpsecret=$corpsecret";
$response = file_get_contents($url);
$data = json_decode($response, true);
$access_token = $data['access_token'];

$url = "https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=$access_token";
$data = array(
    "touser" => "接收消息的用户",
    "msgtype" => "text",
    "agentid" => "应用 AgentId",
    "text" => array("content" => "这是一条测试消息")
);
$data = json_encode($data);
$options = array(
    'http' => array(
        'header'  => "Content-type: application/json",
        'method'  => 'POST',
        'content' => $data
    )
);
$context  = stream_context_create($options);
$response = file_get_contents($url, false, $context);

$url = "https://qyapi.weixin.qq.com/cgi-bin/media/upload?access_token=$access_token&type=image";
$data = array(
    "media" => new CURLFile(realpath("图片路径"))
);
$options = array(
    'http' => array(
        'header'  => "Content-type: multipart/form-data",
        'method'  => 'POST',
        'content' => $data
    )
);
$context  = stream_context_create($options);
$response = file_get_contents($url, false, $context);
$data = json_decode($response, true);
$media_id = $data['media_id'];

$url = "https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=$access_token";
$data = array(
    "touser" => "接收消息的用户",
    "msgtype" => "image",
    "agentid" => "应用 AgentId",
    "image" => array("media_id" => $media_id)
);
$data = json_encode($data);
$options = array(
    'http' => array(
        'header'  => "Content-type: application/json",
        'method'  => 'POST',
        'content' => $data
    )
);
$context  = stream_context_create($options);
$response = file_get_contents($url, false, $context);

$message = file_get_contents("php://input");
$data = json_decode($message, true);
$from_user = $data["FromUserName"];
$content = $data["Content"];

// 处理客户消息

// 回复消息
$url = "https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=$access_token";
$data = array(
    "touser" => $from_user,
    "msgtype" => "text",
    "agentid" => "应用 AgentId",
    "text" => array("content" => "这是一条回复消息")
);
$data = json_encode($data);
$options = array(
    'http' => array(
        'header'  => "Content-type: application/json",
        'method'  => 'POST',
        'content' => $data
    )
);
$context  = stream_context_create($options);
$response = file_get_contents($url, false, $context);