PHP is a server-side scripting language, which is extensively designed for website development. It is also used as an all-purpose programming language as it is user-friendly and efficient. PHP is an easy program language with logical syntax and well-described command functions. Future of PHP Development. Hypertext Preprocessor (PHP) is an HTML embedded server-side scripting language, mainly used for website development. … The most interesting fact about PHP is that it has become so popular that around 80% of websites are implementing PHP as their server-side scripting language today.