PHP is one of the most commonly used open-source server-side programming languages. It is exceptionally popular as it is free software, which you can use to set up interactive websites such as community websites, online shops or online teaching portals instead of static HTML websites. A PHP module must be enabled on the web server where a PHP-powered website is hosted so that its source code can be read. As there aren’t any license taxes for this kind of module and the language offers innumerable possibilities for the Internet applications that you set up, there’re hundreds of millions of PHP-powered websites. Plus, there’re an immense number of PHP scripts, which you can use for your sites without needing to have any programming capabilities. As there are a number of versions of PHP, you ought to check if the same version that you used whilst building your site is present on the server too.