A PHP developer created a simple web application that allows users to send Halloween-themed images via SMS using Twilio's Programmable Messaging API and DigitalOcean Spaces. The app includes a form with options to select an image, write a message, and enter a friend's phone number. After submitting the form, the user is redirected to a "thank you" page displaying a success message. The application uses Twig templating engine for rendering views and Laminas InputFilter package for validating user input. It also utilizes PHP DI container and Slim framework for building the web application.