FCM：在PHP中向每个registration_ids发送不同的声音

Question

我正在尝试通过php向每个registration_ids发送不同的声音

每当我使用自定义声音发送给某个令牌时，我都试图在循环中执行此操作，但是由于我有很多registration_ids，它被延迟了。

这是我的代码：

<?php
 $payload = array(
          'registration_ids'=>array('TOKEN_1','TOKEN_2'),
          'priority'=>'high',
          "mutable_content"=>true,
              "notification"=>array(
                      "title"=> 'TEST',
                      "body"=> 'TEST',
                      "sound"=> ["1.wav", "2.wav"]


              )
        );
    $headers = array(
            'Authorization:key = AIza.....',
            'Content-Type: application/json'
    );

    $ch = curl_init();
    curl_setopt( $ch,CURLOPT_URL, 'https://fcm.googleapis.com/fcm/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( $payload ) );
    $result = curl_exec($ch );
    curl_close( $ch );