php - 为 firebase 云消息传递 PHP 生成 OAUTH token

Question

我有一个 PHP 页面，用于向我开发的移动应用程序的用户发送通知，该页面在上个月之前工作正常，然后它给了我这个错误

{"multicast_id":5174063503598899354,"success":0,"failure":1,"canonical_ids":0,"results":[{"error":"InvalidRegistration"}]}

我尝试使用此链接中的文档生成 OAUTH token https://firebase.google.com/docs/cloud-messaging/auth-server#node.js但它需要 NODE.JS 服务器，而我的服务器不支持 Node.Js ，我尝试使用 Firebase Admin SDK 但找不到任何东西。这是页面的PHP代码

<?php

//Includes the file that contains your project's unique server key from the Firebase Console.
require_once("serverKeyInfo.php");

//Sets the serverKey variable to the googleServerKey variable in the serverKeyInfo.php script.
$serverKey = $googleServerKey;

//URL that we will send our message to for it to be processed by Firebase.
    $url = "https://fcm.googleapis.com/fcm/send";

//Recipient of the message. This can be a device token (to send to an individual device) 
//or a topic (to be sent to all devices subscribed to the specified topic).
$recipient = $_POST['rec'];

//Structure of our notification that will be displayed on the user's screen if the app is in the background.
$notification =array(
    'title'   => $_POST['title'],
    'body'   => $_POST['body'],
    'sound' => 'default'
);

//Structure of the data that will be sent with the message but not visible to the user.
//We can however use Unity to access this data.
$dataPayload =array( 

    "powerLevel" => "9001",
    "dataString" => "This is some string data"
);

//Full structure of message inculding target device(s), notification, and data.
$fields =array(

    'to'  => $recipient,
    'notification' => $notification,
    'data' => $dataPayload
);

//Set the appropriate headers
$headers = array(

'Authorization: key=' . $serverKey,
'Content-Type: application/json'
);
//Send the message using cURL.
$ch = curl_init();
curl_setopt( $ch,CURLOPT_URL, $url);
curl_setopt( $ch,CURLOPT_POST, true );
curl_setopt( $ch,CURLOPT_HTTPHEADER, $headers );
curl_setopt( $ch,CURLOPT_RETURNTRANSFER, true );
curl_setopt( $ch,CURLOPT_SSL_VERIFYPEER, false );
curl_setopt( $ch,CURLOPT_POSTFIELDS, json_encode( $fields ) );
$result = curl_exec($ch );
curl_close( $ch );

//Result is printed to screen.
echo $result;
?>

任何人都可以给我一个例子，我该怎么做(我是 PHP 的初学者)提前致谢

*更新:我还尝试将代码中的 $url 更改为

$url = "https://fcm.googleapis.com/v1/projects/notifications-9ccdd/messages:send";

但它给了我这个错误

"error": {"code": 401,"message": "Request had invalid authentication credentials. Expected OAuth 2 access token, login cookie or other validauthentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.","status": "UNAUTHENTICATED"}Blockquote

Answer 1

对于仍在寻找此问题(2021 年)答案的任何人，为了通过您自己的 PHP 系统向 Firebase 消息传递系统发送推送消息，您需要来自 Google Credentials 的访问 token 。以下是如何做到这一点 - 请注意我只在 PHP Laravel 中完成了此操作，而不是原始 PHP。但是您应该能够通过修改适合的步骤来找到普通的 PHP 解决方案(也与 Code Igniter 和其他 PHP 库相同)

1. 在你的http://console.firebase.google.com在项目->设置->服务帐户下找到 Firebase 服务帐户。生成一个新的私钥并下载 json 文件。将其存储在您服务器上用户无法访问的地方。

2. 安装 Google API 客户端。对于 Laravel，这是:

     composer require google/apiclient --with-all-dependencies
   

3. 打开 composer.json，并添加到自动加载数组。对于 Laravel，这是:

    "classmap": [
        "vendor/google/apiclient/src/Google"
    ],
   

4. 创建一个新的服务类(如果是原始 PHP，则创建一个新的类)，并添加以下方法来检索访问 token :

   private function getGoogleAccessToken(){
   
        $credentialsFilePath = 'the-folder-and-filename-of-your-downloaded-service-account-file.json'; //replace this with your actual path and file name
        $client = new \Google_Client();
        $client->setAuthConfig($credentialsFilePath);
        $client->addScope('https://www.googleapis.com/auth/firebase.messaging');
        $client->refreshTokenWithAssertion();
        $token = $client->getAccessToken();
        return $token['access_token'];
   }
   

5. 现在创建一个方法，通过 CURL 将所有消息信息发送到 Firebase:

   public function sendMessage(){
   
    $apiurl = 'https://fcm.googleapis.com/v1/projects/your-project-id/messages:send';   //replace "your-project-id" with...your project ID
   
    $headers = [
            'Authorization: Bearer ' . $this->getGoogleAccessToken(),
            'Content-Type: application/json'
    ];
   
    $notification_tray = [
            'title'             => "Some title",
            'body'              => "Some content",
        ];
   
    $in_app_module = [
            "title"          => "Some data title (optional)",
            "body"           => "Some data body (optional)",
        ];
    //The $in_app_module array above can be empty - I use this to send variables in to my app when it is opened, so the user sees a popup module with the message additional to the generic task tray notification.
   
     $message = [
           'message' => [
                'notification'     => $notification_tray,
                'data'             => $in_app_module,
            ],
     ];
   
     $ch = curl_init();
     curl_setopt($ch, CURLOPT_URL, $apiurl);
     curl_setopt($ch, CURLOPT_POST, true);
     curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
     curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
     curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
     curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($message));
   
     $result = curl_exec($ch);
   
     if ($result === FALSE) {
         //Failed
         die('Curl failed: ' . curl_error($ch));
     }
   
     curl_close($ch);
   
   }
   

Google 建议您仅在无法将 JSON 文件作为环境变量直接添加到服务器上时才使用此方法。我不知道为什么谷歌没有关于这个主题的更好的 PHP 文档，它似乎更喜欢 node.js 、Go、Java 和 C++。