PHP, which is a recursive backronym for PHP: Hypertext Preprocessor, is among the most widely used server-side coding languages that are available out there. Any website or web-based application built on PHP will run on a given web server on the condition that a PHP module is enabled, which renders the language truly universal and it is not a surprise that there are several million servers that support it and hundreds of millions of PHP websites hosted on them. What makes PHP preferred over HTML is the fact that it allows you to build a responsive website with numerous options. A PHP-based community portal, for instance, will show different content to each user irrespective of the fact that the URL will remain the same. In comparison, HTML-based websites are static and the page content can be updated only manually. Just like any other piece of software, PHP has different versions and the version that was used whilst creating a given website must be enabled on the server so that the site can run properly.