PHP, the symbol for "PHP: Hypertext Preprocessor", is a script language mostly used to create dynamic webpages for HTTP servers.
If you do not have advanced skills in programming, PHP hosting is a good choice as it is an easy to learn language and it is a good language to start with.
As PHP is a popular language overall, you won't have any trouble when looking up for answers on how to solve a problem online. There are plenty of tutorials and documentation about this language.
Also, most CMS uses PHP language, this is why, here at PL Server, most of our servers comes pre-equipped with PHP by default as well as MySql and Apache.
PHP is a powerful language with a wide variety of applications that run server side and return HTML to the client's browser.