PHP is a popular general-purpose scripting language that is especially suited to web development. Fast, flexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world.

• php.net - The canonical website of the PHP project. Everything you need or want to know about PHP is here.
• php/php-src - Source code for PHP can be found right here on github
  • Release Tarballs - Versioned release bundles, ready to build
  • Windows Binaries - Prebuilt executables for Windows
• Documentation - Available in several translations
  • Docbook Source - Open source documentation in XML
• Mailing Lists - All development discussion happens over email
  • Archives - Archives of previous discussions available via web and NNTP
  • Externals.io - A prettier view of the internals mailing list in threaded form (3rd party site)
• Get involved - Help make PHP better!