Deprecation notice: New functionality will only be added to the new library (PHP Helper Library 6.x). The old library (5.x) is deprecated and Twilio will no longer provide bug fixes. Support may ask you to upgrade before debugging issues.
The Twilio PHP Helper Library has undergone a number of changes from version 5.x to 6.x. Please see our upgrade guide for details. The upgrade guide breaks down the major changes to make upgrading as easy as possible. If you're integrating Twilio in your PHP app for the first time, you can skip straight to the install page.
Version 6.x of the PHP SDK requires at least PHP version 7.2. The last version of the Twilio PHP SDK to support PHP versions 5.5, 5.6, 7.0, 7.1 or earlier is 5.42.2.