Blackfire¶

Blackfire is a PHP profiler and performance testing platform. It instruments PHP code at runtime to collect detailed call graphs, including CPU time, memory usage, I/O, and network calls, with minimal overhead in production environments.

Blackfire integrates with IDEs, CI pipelines, and the Blackfire Player tool for automated performance assertions. It is developed and maintained by Blackfire.io, acquired by Platform.sh in 2020.