It is used to process HTML forms and performs other custom tasks. The user could write a custom application in PHP that modifies settings on a web server and makes the server vulnerable to attacks. And, because PHP is executed on the server, the client cannot view the PHP code. PHP can perform any task that any CGI program can do, but its strength lies in its compatibility with many types of databases.
It was among the first server-side languages that could be embedded into HTML, making it easier to add functionality to web pages without needing to call external files for data. Its use has evolved over the years, with regular upgrades (version 8.0 was released in November 2020) adding features and unlocking new capabilities.
PHP is very easy for beginners and also offers many advanced features for professional programmers. PHP runs most efficiently on an Apache server, but it can also run on IIS. Original it supposedly meant personal home page. It is an open source, server-side, HTML embedded scripting language used to create dynamic Web pages.
Many websites use PHP, including Facebook, because of its easy-to-use nature, including embedded coding for HTML. In general, PHP is regarded as an easy programming language to master for people just starting to learn to program.
PHP - a general-purpose scripting language
