PHP is an open source programming language that is used to create dynamic web pages. PHP was created by Rasmus Lerdorf in 1994, and it was released as free software on the Internet. The latest version of PHP is 7.3, which contains many new features and bug fixes. PHP applications are the most common way to add dynamic functionality to web pages. It is one of the most popular programming languages in the world, with a market share of around 82%. They allow to develop applications more quickly and easily, and they can be used in a variety of industries, including ecommerce, education, health care and finance.
A few of the most popular PHP Application open source libraries for developers are: Slim - PHP micro framework; wallabag - self hostable application for saving web pages; php-pm - process manager, supercharger and load balancer.