如何在android

Question

当我尝试发送多次推送通知时，我得到的错误就像。

我的PHP编码是： -

<?php

//Sending Push Notification
function send_push_notification($device_id, $msg)
{
//echo "fdff";
    // Set POST variables
    $url = 'https://android.googleapis.com/gcm/send';

     //$message1 = array("header" => $msg);
    $x = array($device_id);

     $fields = array(
        'registration_ids' => $x,
        'data' => array("message" => $msg),
    );
    //print_r($fields);
    $headers = array(
        'Authorization: key=' . "AIzaSyAYmZljXmJWgIqD5sQ9_0d-    jUVorm3ZnhA",
        'Content-Type: application/json'
    );

    $ch = curl_init();
    curl_setopt($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);
    if ($result === FALSE) {
        die('Curl failed: ' . curl_error($ch));
    }
    curl_close($ch);
    return $result;
}
?>

这是我的错误。

{"multicast_id":5911003352460212858,"success":0,"failure":1,"canonical_ids":0,"results":[{"error":"MismatchSenderId"}]}

{"multicast_id":5737426372728217758,"success":1,"failure":0,"canonical_ids":1,"results":[{"registration_id":"APA91bHa4mmnj2EZfiN7EVa5c_eCVKBkQJmImpfedThbwoxyzlxh3f_NGRJ8mVCp63JQnL8ZvKvtH6P_Nz5O_MKu1Kgy7d2oJhLt6-82xK499n1P_mTp6t4m11ERlaU6Oe6vEmqG6CBu","message_id":"0:1449254314294720%66e3e4c4f9fd7ecd"}]}

在这段代码中，我在两台设备上取得了成功，但在一台设备中却没有发送。 那怎么可能呢？