Sending push notification using php server.

app.js

var Cloud = require("ti.cloud");

Cloud.Users.login({
	login : 'YOUR_LOGIN',
	password : 'password'
}, function(e) {
	if (e.success) {
		var user = e.users[0];
		Ti.API.info('Success:\n' + 'id: ' + user.id + '\n' + 'sessionId: ' + Cloud.sessionId + '\n' + 'first name: ' + user.first_name + '\n' + 'last name: ' + user.last_name);

	} else {
		Ti.API.info('Error:\n' + ((e.error && e.message) || JSON.stringify(e)));
	}
});

var win = Ti.UI.createWindow({
	backgroundColor : '#fff'
});

// Create a Button.
var subscribed = Ti.UI.createButton({
	title : 'subscribed',
	height : Ti.UI.SIZE,
	width : Ti.UI.SIZE,
	top : 20,

});

// Listen for click events.
subscribed.addEventListener('click', function() {
	subscribeToChannel();
});

// Add to the parent view.
win.add(subscribed);

var deviceToken = null;

var CloudPush = require('ti.cloudpush');

// Initialize the module
CloudPush.retrieveDeviceToken({
	success : deviceTokenSuccess,
	error : deviceTokenError
});
// Enable push notifications for this device
// Save the device token for subsequent API calls
function deviceTokenSuccess(e) {
	deviceToken = e.deviceToken;
}

function deviceTokenError(e) {
	Ti.API.info('Failed to register for push notifications! ' + e.error);
}

// Process incoming push notifications
CloudPush.addEventListener('callback', function(evt) {
	Ti.API.info("Notification received: " + evt.payload);
});

// Check if the device is running iOS 8 or later

// Process incoming push notifications
function receivePush(e) {
	Ti.API.info('Received push: ' + JSON.stringify(e));
}

// Save the device token for subsequent API calls
function deviceTokenSuccess(e) {
	deviceToken = e.deviceToken;

}

function deviceTokenError(e) {
	Ti.API.info('Failed to register for push notifications! ' + e.error);
}

function subscribeToChannel() {
	// Subscribes the device to the 'news_alerts' channel
	// Specify the push type as either 'android' for Android or 'ios' for iOS
	Cloud.PushNotifications.subscribe({
		channel : 'update_alert',
		device_token : deviceToken,
		type : Ti.Platform.name == 'android' ? 'android' : 'ios'
	}, function(e) {
		if (e.success) {
			alert('Success');
		} else {
			alert('Error:\n' + ((e.error && e.message) || JSON.stringify(e)));
		}
	});
}

win.open();

test.php

<?php
    /*** SETUP ***************************************************/

    $key        = "YOUR_APP_KEY";
    $username    = "YOUR_LOGIN";
    $password    = "YOUR_PASSWORD";
    $channel    = "PUSH_CHANNEL";
    $to_ids     = "everyone";
    $message    = "YOUR_MESSAGE";
    $title        = "YOUR_ANDROID_TITLE";
    $tmp_fname     = 'cookie.txt';
    $json         = '{"alert":"'. $message .'","title":"'. $title .'","vibrate":true,"sound":"default"}';




    if (!is_null($key) && !is_null($username) && !is_null($password) && !is_null($channel) && !is_null($message) && !is_null($title)){
        /*** PUSH NOTIFICATION ***********************************/
        $post_array = array('login' => $username, 'password' => $password);

        /*** INIT CURL *******************************************/
        $curlObj    = curl_init();
        $c_opt      = array(CURLOPT_URL => 'https://api.cloud.appcelerator.com/v1/users/login.json?key='.$key,
                            CURLOPT_COOKIEJAR => $tmp_fname,
                            CURLOPT_COOKIEFILE => $tmp_fname,
                            CURLOPT_RETURNTRANSFER => true,
                            CURLOPT_POST => 1,
                            CURLOPT_POSTFIELDS  =>  "login=".$username."&password=".$password,
                            CURLOPT_FOLLOWLOCATION  =>  1,
                            CURLOPT_TIMEOUT => 60);

        /*** LOGIN **********************************************/
        curl_setopt_array($curlObj, $c_opt);
        $session = curl_exec($curlObj);

        /*** SEND PUSH ******************************************/
        $c_opt[CURLOPT_URL]         = "https://api.cloud.appcelerator.com/v1/push_notification/notify.json?key=".$key;
        $c_opt[CURLOPT_POSTFIELDS]  = "channel=".$channel."&payload=".$json."&to_ids=".$to_ids;

        curl_setopt_array($curlObj, $c_opt);
        $session = curl_exec($curlObj);

        /*** THE END ********************************************/
        curl_close($curlObj);

        header('Content-Type: application/json');
        die(json_encode(array('response' => json_decode($session))));
    }else{
        header('Content-Type: application/json');
        die(json_encode(array('response' => json_decode($session))));
    }
?>

hello, i am trying the code. i am getting an error:
{"response":{"meta":{"status":"fail","code":400,"message":"Failed to authenticate user"}}}

I think the problem is caused by the variable tmp_fname. I have read / write permission to my server. I'm still getting the same error.