PHPでGCMに投げる(PHP5 native)

sender.php

<?php
define('API_KEY',    'your-api_key');
define('GOOGLE_URL', 'https://android.googleapis.com/gcm/send');

//$regId = 'your_registration_id';
$regId = trim(file_get_contents('register.txt'));

$data = array('registration_id' => $regId,
              'collapse_key'    => 'update',
              'data.message'    => 'Hello, GCM');

$data = http_build_query($data, '', '&');

$header = array('Content-Type: application/x-www-form-urlencoded;charset=UTF-8',
                'Authorization: key=' . API_KEY,
                'Content-Length: ' . strlen($data));

$context = array(/**/'http'/**/ => array('method'  => 'POST',
                                         'header'  => implode("\r\n", $header),
                                         'content' => $data));

$response_body = file_get_contents(GOOGLE_URL, false, stream_context_create($context));

var_dump($context);
var_dump($http_response_header);
var_dump($response_body);

Nice. Thanks