PHP, which is a bacronym for PHP: Hypertext Preprocessor, is amongst the most commonly used general-purpose scripting languages available out there. Any site or app created with PHP will run on a given web server on the condition that a PHP module is activated, which renders the language really universal and it is hardly a surprise that there are actually a few million servers that support it and 100s of millions of PHP-powered websites hosted on them. PHP is preferred over HTML due to the fact that it enables you to create a responsive site with a plethora of features. A PHP-based community site, for example, will display unique web content to each user although the URL will remain the same. In comparison, HTML-based websites are static and the content on the pages can be edited only manually. Like any other software program, PHP has several versions and the one that was used while creating a certain website must be available on the web server in order for the site to run flawlessly.