PHP was at first created as a simple scripting platform called "Personal Home Page". Nowadays PHP (the short for Hypertext Preprocessor) is an alternative of the Microsoft's Active Server Pages (ASP) technology. PHP is an open source server-side language which is used for creating dynamic web pages. It can be embedded into HTML. PHP is usually used in conjunction with a MySQL database on Linux/UNIX web servers. It is probably the most popular scripting language. PHP is a widely-used general-purpose scripting language and interpreter that is freely available. A full explanation of all the PHP tags, complete user manual and lots of tutorials can be found on the PHP's official page..
80% of the top 10 million websites use PHP. PHP is particularly popular for freelance work, since many small businesses or non-technical people would want to use WordPress, Wix, or other popular content management systems to set up their websites or shopping carts. PHP was designed for the web, and it does the job well. Facebook has made serious investments into PHP.