How to Lookup Phone Numbers in Plain PHP With Twilio's Lookup API

To verify the authenticity of phone numbers stored in user profiles, developers can use Twilio's Lookup API with plain PHP. The process requires installing three dependencies: Twilio's PHP Helper Library, PHP dotenv, and CLImate. A free Twilio account is also necessary. Once set up, a single file `index.php` contains the code that retrieves phone number details using the Lookup API. The code fetches a specific phone number and prints its country code, national format, international format, carrier name, and type. The output is formatted using CLImate for a polished appearance. The example demonstrates how to verify phone numbers in plain PHP without relying on a framework, making it accessible to developers of all skill levels.