PHP is among the most widely used open-source server-side programming languages. It’s very popular as it’s free software, which can be used to develop responsive websites such as community web portals, e-commerce portals or e-teaching websites as opposed to static HTML-based sites. A PHP module should be available on the server where a PHP website is hosted so that its source code can be ‘deciphered’. Since there are no license charges for this sort of module and the language itself provides incalculable possibilities for the apps that you build, there are 100s of millions of PHP-driven websites. On top of that, there’re a multitude of open-source PHP-based scripts, which you can use for your websites without the need to have any coding expertise. Given the fact that there are a number of versions of PHP, you need to make sure that the exact same version that you used whilst creating your site is available on the web server too.