• Play an Audio File in Voice Calls With PHP Time to read: Facebook logo Twitter LogoFollow us on Twitter LinkedIn logo Play an Audio File in Voice Calls With PHP Audio can make an excellent addition to your voice calls! • For example, it lets you provide informational messages to your customers that are both professional and polished, provide more engaging and interesting on-hold music, present your brand in a consistent manner, through complete control over the tone, language, and clarity, and build powerfulInteractive Voice Response (IVR) systems. • Whether you want to play a recorded message, on-hold music - or any other audio file during calls with your customers -Twilio’s Programmable Voice APImakes it easy! • In this post, you’ll learn how to play an audio file in voice calls using PHP. • What’s more, you’ll learn three different ways to serve the audio file to play in your calls: Using a public hosted file Serving it directly from your PHP app Hosting it with Twilio Assets Prerequisites Before you begin, make sure you have the following: A Twilio account with a phone number that can receive phone calls.Sign up for free todayif you don’t have an account. • PHP8.4 or above Composerinstalled globally ngrokfor testing the application locally A mobile phone that can make calls Your preferred code editor or IDE (such asneovimorVisual Studio Code) Some terminal experience is helpful, though not required Set up the project directory The first thing that we need to do is to set up the project directory structure, by running the following commands.

Article Summaries:

  • The article explains how to play an audio file during voice calls using PHP and Twilio’s Programmable Voice API. It outlines three methods for delivering the audio-hosted publicly, served directly from a PHP application, or stored in Twilio Assets. The guide lists prerequisites such as a Twilio account, PHP 8.4+, Composer, and ngrok for local testing. It then walks through setting up a project directory, installing required packages, configuring a PSR‑4 autoload namespace, and creating a .env file to store the audio file URL. Finally, it provides minimal PHP code that sets up Slim‑based routes to handle incoming calls and serve the audio file.

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