如何在Firefox中执行Curl向用户发送通知

下面是我用来执行推送Chrome用户的代码，现在我想通知firefox用户，我知道它现在将通过url作为目标。"https://updates.push.services.mozilla.com/push"

但我不知道该怎么办。

下面提供了适用于Chrome的我的代码。

<?php
    include('header.php');
    define( 'API_ACCESS_KEY', '[API-KEY comes here]' );
    $sql="SELECT * FROM user_data";
    $result = mysqli_query($conn, $sql) or die ('Error'.mysqli_error($conn));
    $registrationIds=array();
    while($row=mysqli_fetch_assoc($result)){
        $registrationIds[] = $row['allow'];
    }
    $ids=json_encode($registrationIds);
    $fields = array
    (
        'registration_ids'  => $registrationIds
    );
    $headers = array
    (
        'Authorization: key=' . API_ACCESS_KEY,
        'Content-Type: application/json'
    );
    $ch = curl_init();
    curl_setopt( $ch,CURLOPT_URL, 'https://android.googleapis.com/gcm/send' );
    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 );
    echo $result;

    ?>