How to Send Bulk SMS Notifications Using Twilio and PHP's Yii2 Framework

Sending customized SMS notifications to a large number of clients is a crucial feature for any application. However, doing so can be a daunting task, especially when it comes to scalability. This is where Twilio's SMS API and the PHP-based Yii2 framework come into play.

In this article, we will demonstrate how to build an application that sends bulk SMS notifications using Twilio and Yii2. We will also explore how SweetAlert can be used to display pop-up forms and notifications, making it easier for users to send SMS notifications.

The Application Overview

Our application will have a simple user interface that allows users to select clients from a list and enter the SMS content. Once the form is submitted, our PHP script will use Twilio's API to dispatch the messages to the selected clients.

Setting Up the Project

To get started, create a new Yii2 project named `bulk_sms_app` and navigate to the project directory using the following commands:

```bash

composer create-project --prefer-dist yiisoft/yii2-app-advanced bulk_sms_app

cd bulk_sms_app

```

The View Layout

Before we edit the view, let's remove the default Yii2 header and footer and import SweetAlert via CDN. Open `views/layouts/main.php` and update it to match the following code:

```php

use yii\helpers\Html;

use kartik\grid\GridView;

use app\models\Client;

use app\models\Sms;

const TABLE = '#clientsTable';

const CHECKBOXES = table.getElementsByTagName('input');

'dataProvider' => $dataProvider,

'columns' => '

''class' => 'yii\grid\SerialColumn'',

'name',

// ...

'); ?>

$button = '';

echo SweetAlert::widget('

'options' => '

'title' => 'Send SMS',

'text' => 'Enter the SMS content below:',

'input' => 'textarea',

');

```

The Controller

Next, we need to define the controller actions that will handle the SMS sending process. Open `controllers/SmsController.php` and add the following code:

```php

namespace app\controllers;

use Yii;

use yii\data\Pagination;

use app\models\Client;

use app\models\Sms;

class SmsController extends \yii\web\Controller

{

public function actionIndex()

{

$dataProvider = new Pagination('

'totalCount' => Client::find()->count(),

'pageSize' => 10,

');

return $this->render('index', ''dataProvider' => $dataProvider');

}

public function actionNotify()

{

if (Yii::$app->request->isPost) {

$clients = $_POST''clients'';

$smsContent = $_POST''sms_content'';

// Use Twilio's API to dispatch the messages

// ...

return Json::encode(''success' => true, 'message' => 'SMS notifications sent successfully.'');

}

```

In this article, we have demonstrated how to build an application that sends bulk SMS notifications using Twilio and Yii2. We also explored how SweetAlert can be used to display pop-up forms and notifications.

With this tutorial, you should now be able to send customized SMS notifications in bulk to your clients efficiently, without worrying about scalability issues.

Php script to send sms from website