PHP (short for Hypertext PreProcessor) is the most widely used open source and server-side scripting language. It is used to build the web apps of many tech giants like Facebook and to construct many CMS (Content Management systems) like WordPress, Drupal, Shopify, and WooCommerce.
PHP is mainly used for web development and excels in this area. Though initially, developers used it to create dynamic web pages, they prefer to use this scripting language to build the server side of web applications. However, PHP is originally a general-purpose language, so it may have other implementations if needed. For example, it is possible to build desktop applications using PHP. Moreover, starting from version 5, PHP supports object-oriented programming offering a whole new set of capabilities.
The versatility of this scripting language results from its excellent ability to combine with other programming languages.