PHP, which is a meta-acronym for PHP: Hypertext Preprocessor, is one of the most popular programming languages that are available out there. Any website or Internet application built with PHP will run on a given web server on the condition that a PHP module is enabled, which renders the language absolutely universal and it isn’t really that surprising that there are actually a few million servers that support it and hundreds of millions of PHP websites running on them. PHP is preferred over HTML owing to the fact that it enables you to set up an interactive website with a lot of options. A PHP-based community portal, for example, will display different web content to each user irrespective of the fact that the page URL will remain the same. By contrast, HTML-based websites are static and the page content can be modified only manually. Just like any other piece of software, PHP has several versions and the one that was used whilst creating a certain website must be configured on the server so that the site can run properly.