PHP is an HTML-embedded scripting language used to form dynamic web pages, fast. A great choice for both front and back end developers to add to their arsenal (but especially the latter), it’s behind such web giants as WordPress and Facebook. PHP makes it quick and easy to expand web apps and run websites that have repeated server tasks (like refreshing news feeds). It’s open source and is very popular among startup business, media agencies and e-commerce – the kind of people who often hire new-ish web developers.