当设备令牌无效时，向ios设备崩溃发送推送通知

我试图发送推送通知到多个ios设备，但当一个或多个令牌是无效的，它崩溃，不发送消息到其他设备，这是我的代码:

require_once "libs/ApnsPHP/Autoload.php";
$push = new ApnsPHP_Push(ApnsPHP_Abstract::ENVIRONMENT_PRODUCTION,'WenderCastPush.pem');
$pushdevices = array('499D3684-5039-4E56ACB7E285057E8568','21bff83127f8f307b307e828cfe4a65081b7468f980d17f9fbbda05785298c7d');
$push->connect();
foreach ($pushdevices as $device) 
{
    try{
        $message = new ApnsPHP_Message($device);
        $message->setCustomIdentifier("Message-Badge-3");
        $message->setBadge(3);
        $message->setText('Message Alert : Testing IOS');
        $message->setSound();
        $message->setExpiry(30);
        $push->add(@$message);
    }
    catch(Exception $e)
    {}    
}
$push->send();
$push->disconnect();