Tutorial: Use Curl, APNS+FCM and other extensions to implement the global message push function of PHP applications

Tutorial: Using Curl, APNS FCM and other extensions to implement the global message push function of PHP applications

In today's digital era, the global message push function has become a core requirement for many applications. Whether it is social media applications, e-commerce platforms or news clients, they all need to be able to send real-time notifications and push messages to users. This tutorial will introduce how to use PHP and Curl, APNS and FCM extensions to implement global message push functionality.

Step One: Preparation
First, make sure that PHP and Curl extensions are installed on your server. Curl is a tool for communicating with servers, and we will use it to send push requests to Apple and Google's push messaging services. You can install the Curl extension through the following command:

sudo apt-get install php-curl

Next, we need to prepare the certificates and keys required for APNS and FCM. APNS (Apple Push Notification Service) is used to send push notifications to Apple devices, while FCM (Firebase Cloud Messaging) is used to send push notifications to Android devices.

For APNS, you need to create a push certificate on the Apple developer website and download the certificate to your server. Then, you need to use the openssl command to convert the .p12 format certificate into a .pem format file for use in PHP. Convert the .p12 certificate to a .pem certificate using the following command:

openssl pkcs12 -in cert.p12 -out cert.pem -nodes

For FCM you need to create on the Firebase console A project and obtain a server key for authentication. You also need to install the FCM PHP extension. You can install the FCM PHP extension through the following command:

composer require brozot/laravel-fcm

Step 2: Write PHP code
Next, we will write PHP code to implement Global message push function. We will use the Curl extension to send requests to the APNS and FCM push services.

First, we need to introduce the Curl extension at the top of the PHP file:

...
// 引入Curl扩展
...

Then, we need to create a function to send push requests to APNS. This function will receive the device's token, push title (title) and content (body) as parameters, and send the push request to the APNS server:

function sendAPNSPush($token, $title, $ body) {

// 创建推送通知数组
$data = [
    'aps' => [
        'alert' => [
            'title' => $title,
            'body' => $body,
        ],
        'sound' => 'default'
    ]
];

// 加载.pem证书文件
$cert = __DIR__ . '/cert.pem';
$passphrase = 'your_certificate_passphrase';

// 创建Curl实例
$ch = curl_init();

// 设置Curl选项
curl_setopt($ch, CURLOPT_URL, 'https://api.development.push.apple.com/3/device/' . $token);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'Content-Type: application/json',
    'Authorization: Bearer ' . $cert . ':' . $passphrase,
]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

// 执行Curl请求
$result = curl_exec($ch);

// 关闭Curl实例
curl_close($ch);

// 返回结果
return $result;

}

Next, we need to create a function to send push requests to FCM. This function will receive the device's token, push title (title) and content (body) as parameters, and send the push request to the FCM server:

function sendFCMPush($token, $title, $ body) {

// 创建推送通知数组
$data = [
    'notification' => [
        'title' => $title,
        'body' => $body,
    ],
    'to' => $token,
];

// 创建Curl实例
$ch = curl_init();

// 设置Curl选项
curl_setopt($ch, CURLOPT_URL, 'https://fcm.googleapis.com/fcm/send');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'Content-Type: application/json',
    'Authorization: key=your_fcm_server_key',
]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

// 执行Curl请求
$result = curl_exec($ch);

// 关闭Curl实例
curl_close($ch);

// 返回结果
return $result;

}

Step 3: Call the function to send push request
Now, we can call these functions to send push requests in our PHP application to implement global messages Push function. The following is an example:

...
// 引入Curl扩展和APNS、FCM发送函数
...

// 设备令牌
$deviceToken = 'xxxxx';
// 推送标题
$pushTitle = '消息推送';
// 推送内容
$pushBody = '你收到一条新的消息';

// 发送APNS推送
$apnsResult = sendAPNSPush($deviceToken, $pushTitle, $pushBody);

// 发送FCM推送
$fcmResult = sendFCMPush($deviceToken, $pushTitle, $pushBody);

// 输出结果
echo 'APNS推送结果：' . $apnsResult;
echo 'FCM推送结果：' . $fcmResult;

In this way, we have successfully implemented the global message push function of PHP applications using Curl, APNS and FCM extensions. Now, we can send push notifications and push messages to Apple devices and Android devices.

Conclusion
In this tutorial, we learned how to use extensions such as Curl, APNS, and FCM to implement the global message push function of PHP applications. We first prepared the required server environment and certificate keys and integrated them with the PHP code. Then, we wrote functions that sent push requests and actually called these functions to complete the global message push function. With this knowledge and skills, you can add powerful push message functionality to your application and improve user experience.

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