GCM PHP发送到设备的问题

关于GCM的问题，要发送信息到所有移动设备中：

PHP:
$resultcoment = mysql_query("SELECT * FROM notificaciones");
while ($row = mysql_fetch_array($resultcoment)){
$result = '"' . $row['regId'] . '", ';
//print_r($result);
$registrationIDs = array($result);
}
$message = $_POST['message'];
$fields = array(
            'registration_ids'  => $registrationIDs,
            'data'              => array( "message" => $message ),
            );

结果：

"APA91bHmIHSNCSG_YVHYZMPRrXmw-E_iy7bPA9bo934n67afw8hXJHZvm1MNhrPaRtN6XbkXVjZ9T9YFH9qNi0zM5b9cPGxDhrkhysTXyRwTRLd02lQ- v_e4zWkiGGhQt4BpH_ZLNGGAAU6hWo8ny8Mm2_d7GlEkwcKkZdNhWFO5HXGHWF4gbzM", "APA91bHmIHSNCSG_YVHYZMPRrXmw-E_iy7bPA9bo934n67afw8hXJHZvm1MNhrPaRtN6XbkXVjZ9T9YFH9qNi0zM5b9cPGxDhrkhysTXyRwTRLd02lQ-v_e4zWkiGGhQt4BpH_ZLNGGAAU6hWo8ny8Mm2_d7GlEkwcKkZdNhWFO5HXGHWF4gbzM", "APA91bElWWgUTnoI3YRRunJ_BbaAcdc4PASCB3LxcFWQM9RALQE0hc0c1xVF-EIR7iLYFlbeMDjnMPY-503fqzOPAjJT514zo1j86uhUobhlu79PKtvzjMXiBavoiUcaSKY__JVTbQALvmZ8NJtzzRG81Tf1-svTjw", "APA91bElWWgUTnoI3YRRunJ_BbaAcdc4PASCB3LxcFWQM9RALQE0hc0c1xVF-EIR7iLYFlbeMDjnMPY-503fqzOPAjJT514zo1j86uhUobhlu79PKtvzjMXiBavoiUcaSKY__JVTbQALvmZ8NJtzzRG81Tf1-svTjw", {"multicast_id":8410297698153738741,"success":0,"failure":1,"canonical_ids":0,"results": [{"error":"InvalidRegistration"}]}

怎么会这样？