To send bulk SMS with Twilio and Laravel PHP, first install and configure the Twilio Laravel SDK by running `composer require twilio/sdk` and updating the `.env` file with your Twilio credentials. Create a new controller for the BulkSMS app using Laravel's artisan console and include the Twilio class in the controller. Design an HTML form to collect phone numbers and messages, then validate the input data and send out text messages using the Twilio client. Finally, test the app by running `php artisan serve` and visiting the `/bulksms` page to fill out the form and submit it.