PHP is one of the most commonly used server-side programming languages. It is rather popular because it’s free software, which you can use to build responsive websites like social networking websites, e-stores or e-learning sites instead of static HTML sites. A PHP module should be available on the web server where a PHP website is hosted so that its PHP code can be ‘decrypted’. As there aren’t any license charges for this sort of module and the language itself provides infinite possibilities for the Internet applications that you build, there’re hundreds of millions of PHP sites. Additionally, there’re numerous open-source PHP scripts, which you can use for your sites without needing to have any coding experience. Considering the fact that there are different PHP versions, you need to check whether the same exact version that you used while setting up your website is present on the server too.