The Symfony PHP framework

Guzzle, an extensible PHP HTTP client

PHP Static Analysis Tool - discover bugs in your code without running it!

Effective June 1, 2021: Phabricator is no longer actively maintained.

PHP_CodeSniffer tokenizes PHP files and detects violations of a defined set of coding standards.

Event-driven, non-blocking I/O with PHP.

Defines an object-oriented layer for the HTTP specification

Phan is a static analyzer for PHP. Phan prefers to avoid false-positives and attempts to prove incorrectness rather than correctness.

PHP Database Migrations for Everyone

PHP implementation of JSON schema. Fork of the http://jsonschemaphpv.sourceforge.net/ project

Xdebug — Step Debugger and Debugging Aid for PHP

Provides tools to validate values

XHProf is a function-level hierarchical profiler for PHP and has a simple HTML based user interface.

PHP Implementation of the VS Code Language Server Protocol 🆚↔🖥

Database migrations for PHP ala ActiveRecord Migrations with support for MySQL, Postgres, SQLite

Practical Functional Programming in PHP

PHP Manual for Vim

12 factor app skeleton