Push notification message to titanium android app from php server

When I am sending alert and title from Titnaium ACS I am able to getting notifications. but,I wan't send notification to my titanium android app from php server.

When I am trying to sending message from php server, I didn't get any notification on my titanium android app.

App sbuscription code: By this code I am able to Subscribed the device and able to getting message from ACS

var deviceToken = null;
var CloudPush = require('ti.cloudpush');
var Cloud = require('ti.cloud');
CloudPush.enabled = true;
 
CloudPush.addEventListener('callback', function(evt) {
    alert('evt.payload: '+evt.payload);
});
CloudPush.addEventListener('trayClickLaunchedApp', function(evt) {
    Ti.API.info('Tray Click Launched App (app was not running)');
});
CloudPush.addEventListener('trayClickFocusedApp', function(evt) {
    Ti.API.info('Tray Click Focused App (app was already running)');
});
 
CloudPush.retrieveDeviceToken({
    success : deviceTokenSuccess,
    error : deviceTokenError
});
 
function deviceTokenSuccess(e) {
    Ti.API.info('Device Token: ' + e.deviceToken);
    deviceToken = e.deviceToken;
    subscribeToChannel();
 
}
 
function deviceTokenError(e) {
    alert('Failed to register for push! ' + 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.subscribeToken({
        device_token : deviceToken,
        channel : 'news_alerts',
        type : Ti.Platform.name == 'android' ? 'android' : 'ios'
    }, function(e) {
        if (e.success) {
            alert('Subscribed');
 
        } else {
            alert('Error:\n' + ((e.error && e.message) || JSON.stringify(e)));
        }
    });
}

From browser I am sending message, after sent an message I am getting messageId also. But I am uable to get the notification on my android devices.

<?php
 
    function sendMessageToPhone($deviceToken, $collapseKey, $messageText, $yourKey)
    {
        $headers = array('Authorization:key=' . $yourKey);
        $data = array(
                      'registration_id' => $deviceToken,
                      'collapse_key' => $collapseKey,
                      'data.message' => $messageText);
 
        $ch = curl_init();
 
        curl_setopt($ch, CURLOPT_URL, "https://android.googleapis.com/gcm/send");
        if ($headers)
            curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
 
        $response = curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        if (curl_errno($ch)) {
            //request failed
            return false;//probably you want to return false
        }
        if ($httpCode != 200) {
            //request failed
            return false;//probably you want to return false
        }  
        curl_close($ch);  
        return $response;  
    }
 
    ?>
 
 
    <?php
 
    // currenct my application token
    $deviceToken = 'APA91bE5UgyJitsPqUp7NO-J8mWmH8Dyxr89UqIjw6tzFZPbgR_TODGBeyhkjrPLBBcZXmdhwQEQYX6tPy4cXeGpO5mPiZf8HTZDnOumyjsyKGBH1TxO9ZpJ5kW1psQEnSsG3C3-26Sx';
    // gcm app key from google
    $yourKey = 'AIzaSyDm2e2UCrUhHAxvoGLdLbV6l0iwyj83sFI';
    $collapseKey = '1';
    //Post message to GCM when submitted
    $pushStatus = "GCM Status Message will appear here";    
    if(!empty($_GET["push"])) {
 
        $pushMessage = $_POST["message"];   
        if (isset($pushMessage)) {      
             $messageText =  $pushMessage;  
            $pushStatus = sendMessageToPhone($deviceToken,$collapseKey, $messageText, $yourKey);
        }       
    }
?>