PHP, which is an acronym for PHP: Hypertext Preprocessor, is one of the most famous object-oriented programming languages available out there. Any website or app built with PHP will run on a given server on the condition that a PHP module is activated, which makes the language truly universal and it is hardly unusual that there are a couple of million web servers that support it and hundreds of millions of PHP-powered websites hosted on them. PHP is preferred over HTML due to the fact that it permits you to develop an interactive site with a ton of different features. A PHP-based community site, for example, will show unique content to each visitor although the page URL will remain unchanged. On the other hand, HTML websites are static and the page content itself can be edited only manually. Like any other software program, PHP has several versions and the one that was used whilst developing a specific website must be available on the server in order for the site to run faultlessly.