PHP UK Conference 2017 - Adam Baratz - Testing Complex Applications for PHP7

This talk focuses on Wayfair's successful upgrade of their extensive PHP application, which consists of 3.5 million lines of code and supports 2 million daily visitors. The speaker details the comprehensive test plan implemented to ensure a smooth transition to PHP 7, highlighting various strategies and tools used throughout the process. The session includes a practical tour of key PHP testing tools, such as PHPUnit and GDB, providing valuable insights for developers looking to enhance their testing practices.