PHP is a server-side scripting language for creating dynamic Web pages.You create pages with PHP and HTML. PHP development constitutes a very popular open-source solution stack.PHP is currently the most popular web server extension language, used by many websites both large and small. It combines Linux, Apache, MySQL, and PHP and forms a powerful, secure, and flexible application server.PHP acting as a one stop shop for all your linux needs. Linux is a secure, open-source operating system with a large community support base which provides a stable foundation upon which Velocis stands.PHP also contains all the functions to do things on the Internet - connecting to remote servers, checking email via POP3 or IMAP, url encoding, setting cookies, redirecting, etc. The PHP engine — that is, the code that sits on the Web server and runs PHP scripts — is open source, which means anyone can access and work on the engine's source code.