Use Curl, APNS+FCM and other extensions to implement the full platform message push function of PHP applications

Use Curl, APNS FCM and other extensions to implement the full-platform message push function of PHP applications

Message push is one of the essential functions in today's mobile application development. In PHP development, we can use various extensions to implement platform-wide message push functions, including Curl, APNS (Apple Push Notification Service) and FCM (Firebase Cloud Messaging).

In this article, I will introduce how to use Curl extension to send HTTP requests, and how to combine APNS and FCM to achieve platform-wide message push function.

Use Curl to send HTTP requests

Curl is a powerful PHP extension that can be used to send various types of HTTP requests. We can use Curl to send push requests to APNS and FCM.

First, we need to make sure our server has the Curl extension installed. You can check whether Curl is installed by executing the following command:

php -m | grep curl

If the Curl extension is installed, "Curl" will be output. If it is not installed, you need to install the Curl extension.

Next, we can use the Curl extension's curl_init() function to initialize a Curl session:

$ch = curl_init();

Then, we can use curl_setopt()Function to set various options of the Curl session, such as URL, request method, request header, etc.:

$url = "https://example.com";
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, "param1=value1¶m2=value2");

In the above example, we set the URL of the Curl session to "https://example.com ", the request method is POST, and the request body parameters are set.

Next, we can use the curl_exec() function to execute the Curl session and obtain the response result:

$response = curl_exec($ch);

if ($response === false) {
    die("Curl error: " . curl_error($ch));
}

curl_close($ch);

The above code will execute the Curl session and will respond with the result Stored in the $response variable. If the request fails, a Curl error message will be output.

Combining APNS and FCM to achieve full-platform message push

Now that we have understood the basic knowledge of using Curl to send HTTP requests, we will combine APNS and FCM to implement the full-platform message push function .

First, we need to prepare the certificates and keys required for APNS and FCM. For how to generate APNS certificates and keys, you can refer to Apple's official documentation; for how to generate FCM keys, you can refer to Firebase's official documentation.

For APNS, we can use the Curl extension to send HTTP/2 requests to Apple's push service. The following is a sample code for sending push messages to APNS:

$ch = curl_init();

$url = "https://api.development.push.apple.com/3/device/";
$headers = array(
    "Content-Type: application/json",
    "Authorization: Bearer "
);

$msg = array(
    "aps" => array(
        "alert" => "Hello, APNS!",
        "sound" => "default"
    )
);

$data = json_encode($msg);

curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$response = curl_exec($ch);

if ($response === false) {
    die("Curl error: " . curl_error($ch));
}

curl_close($ch);

In the above code, we set the URL of APNS to "https://api.development.push.apple.com/3/device/ ", where is the push token of the device, and is the APNS authentication token.

For FCM, we can use the Curl extension to send HTTP requests to Firebase's cloud messaging service. The following is a sample code for sending push messages to FCM:

$ch = curl_init();

$url = "https://fcm.googleapis.com/fcm/send";
$headers = array(
    "Content-Type: application/json",
    "Authorization: key="
);

$msg = array(
    "to" => "",
    "notification" => array(
        "title" => "Hello, FCM!",
        "body" => "This is a test message"
    )
);

$data = json_encode($msg);

curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$response = curl_exec($ch);

if ($response === false) {
    die("Curl error: " . curl_error($ch));
}

curl_close($ch);

In the above code, we set the URL of FCM to "https://fcm.googleapis.com/fcm/send", where is the push token of the device, is the FCM server key.

Through the above code examples, we can combine Curl, APNS and FCM to implement the full platform message push function of PHP applications. Whether sending APNS push to iOS devices or FCM push to Android devices, we can use Curl extension to send HTTP requests to easily implement the full platform message push function.

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