stack overflow is the largest, most trusted online community for developers to learn, share​ ​their programming ​knowledge, and build their careers.

php is a popular general-purpose scripting language that powers everything from your blog to the most popular websites in the world.

sourceforge provides free & fast open source software downloads and development, and business software reviews and comparisons featuring the largest open source and business software directory.

phpunit is the industry-leading test automation framework for software built using php.

github is where over 100 million developers shape the future of software, together. contribute to the open source community, manage your git repositories, review code like a pro, track bugs and features, power your ci/cd and devops workflows, and secure code before you commit it.

jetbrains is a cutting-edge software vendor specializing in the creation of intelligent development tools, including intellij idea – the leading java ide, and the kotlin programming language.

php.watch is a source for php news, upcoming changes to the language core and extensions, and articles.