Script to send iOS and Android Push Notifications.

sendpush.php

<?php

/*#############################
* Developer: Mohammad Sharaf Ali
* Designation: Web Developer
* Version: 1.0
*/#############################

#function to send push notification
function sendPush($deviceToken, $body, $type, $params) {
	$result = '';

    if ($type == 'ios') {
        if ($deviceToken != '(null)') { // null device token when ios user don't opt for push notification permission
            $passphrase = $params['pass_phrase'];
            $url = $params['url']; // ssl://gateway.sandbox.push.apple.com:2195

            $ctx = stream_context_create();
            stream_context_set_option($ctx, 'ssl', 'local_cert', 'path/to/your/ck.pem');
            stream_context_set_option($ctx, 'ssl', 'passphrase', $passphrase);

            $fp = stream_socket_client($url, $err, $errstr, 60, STREAM_CLIENT_CONNECT|STREAM_CLIENT_PERSISTENT, $ctx);

            /*
            if (!$fp) {
                exit("Failed to connect: $err $errstr" . PHP_EOL);
            }
            */

            /* sample data
                $body['aps'] = array('alert' => 'Hello to the future!',
                                     'sound' => 'default',
                                     'badge' => 1
                );

                $body['Data'] = array('custom_key' => 'custom_value');
            */

            $payload = json_encode($body);

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

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

            fclose($fp);
        }
    } else if ($type == 'android') {
        if (!is_null($deviceToken)) {
            $google_api_key = $params['google_api_key'];
            $url = $params['url']; // https://android.googleapis.com/gcm/send

            
            /* sample data
                $body = array('custom_key' => 'custom_value'],
                              'price' => 'Hello to the future!');
            */

            $fields = array(
                'registration_ids' => array($deviceToken), // can be single or array of device tokens
                'data' => $body);

            $headers = array('Authorization: key=' . $google_api_key,
                             'Content-Type: application/json');

            $ch = curl_init();

            curl_setopt($ch, CURLOPT_URL, $url);
            curl_setopt($ch, CURLOPT_POST, true);
            curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));

            $result = curl_exec($ch);

            /*
            if ($result === FALSE) {
                die('Curl failed: ' . curl_error($ch));
            }
            */

            curl_close($ch);
        }
    }

    return $result;
}