Applications that PHP developers can use to write, build, deploy, debug, document, maintain, or otherwise support development.
IDE
An IDE or Integrated Development Environment is a tool that allow you to write and edit source code, it can assist with error detection, formatting, automation, refactoring, compilation, debugging and other common tasks all from a common interface.
Build Tools
Tools used during the process of building and deploying your project, this could be end to end automation, or tools to manage discrete parts of the build process, this can include compiling,packaging,testing,deployment, documentation, profiling and other common tasks.
Documentation
A documentation generator is tool that generates documentation intended for programmers (API documentation) or end users (End-user Guide), or both, from a set of specially commented source code files, and in some cases, binary files.