ios php 推送消息,PHP：向ios发送推送通知

我正在发送从PHP到ios的推送通知.它工作正常,这是我的代码：

$passphrase = '';

$badge = 1;

$path = base_path('path/to/certificate.pem');

$ctx = stream_context_create();

stream_context_set_option($ctx,'ssl','local_cert',$path);

stream_context_set_option($ctx,'passphrase',$passphrase);

$fp = stream_socket_client(

'ssl://gateway.sandBox.push.apple.com:2195',$err,$errstr,60,STREAM_CLIENT_CONNECT | STREAM_CLIENT_PERSISTENT,$ctx

);

if (!$fp) {

self::SavePush($device_token,$message,$device_id,$device_type,$user_id,"pending","normal",null);

}

//echo 'Connected to APNS' . PHP_EOL;

$body['aps'] = array(

'alert' => $message,'badge' => $badge,'sound' => 'default'

);

$payload = json_encode($body);

$msg = chr(0) . pack('n',32) . pack('H*',$device_token) . pack('n',strlen($payload)) . $payload;

$result = fwrite($fp,$msg,strlen($msg));

//print_r($result);exit;

if (!$result) {

self::SavePush($device_token,null,$result);

} else {

self::SavePush($device_token,"sent",$result);

}

fclose($fp);

现在我遇到的问题是,我无法确定通知是否失败,因为$result在每种情况下都包含一个整数,成功或失败.我已经传递了一个随机数字作为标记,它返回115或65之类的整数,每次都会改变.所以！$结果不会工作.我怎么知道通知是否失败？