Received HttpResponse 400 from PHP server using Zend framework - php

Question

I am trying to send push notifications to my android application using PHP server with Zend framework, but i am getting the HttpResponse as : The request could not be parsed as JSON or contains invalid fields, with the error code 400.
I have used the server code as given in the demo of Zend framework, which is as follows :
<?php
require_once 'Zend/Mobile/Push/Gcm.php';
require_once 'Zend/Mobile/Push/Message/Gcm.php';
$regId = $_POST["registrationid"];
$message = new Zend_Mobile_Push_Message_Gcm();
$message->setId(time());
$message->addToken($regId);
$message->setData(array(
'foo' => 'bar',
'bar' => 'foo',
));
$gcm = new Zend_Mobile_Push_Gcm();
$gcm->setApiKey('my api key');
try {
$response = $gcm->send($message);
} catch (Zend_Mobile_Push_Exception $e) {
// all other exceptions only require action to be sent or implementation of exponential backoff.
die($e->getMessage());
}
// handle all errors and registration_id's
foreach ($response->getResults() as $k => $v) {
if ($v['registration_id']) {
printf("%s has a new registration id of: %s\r\n", $k, $v['registration_id']);
}
if ($v['error']) {
printf("%s had an error of: %s\r\n", $k, $v['error']);
}
if ($v['message_id']) {
printf("%s was successfully sent the message, message id is: %s", $k, $v['message_id']);
}
}

Answer 1

I don't have my exact URL handy and I'm trying on my phone, but I touched on this recently in my blog. See http://www.rogerethomas.com
What you will need is to use a browser API key, not a server one. Don't ask why but it seems there's an error with Googles documentation.
Edit: here's a recent link to my answer from another similar question:
GCM with PHP (Google Cloud Messaging)