PHP is a programming language designed for the age of the World Wide Web.
Originally all web pages were written using HTML (HyperText Markup Language).
HTML was (and is) a language that enables information to be displayed over the
Internet by a standard piece of software, known as a web browser, in a very fl exible
way. It was developed by the British scientist Tim Berners-Lee in the early 1990s
and the rest is very well-known history.
Freely available web browsers and web page authoring tools combined with
broadband telephone connections in most offi ces and many homes, the availability
of WiFi wireless internet connections, high-powered search engines, etc. has made

the WWW one of the most infl uential (although almost entirely unpredicted) devel-
opments of the late twentieth and early twenty-fi rst centuries, providing information

at zero or minimal cost worldwide to businesses, individuals in the home and travel-
lers using mobile devices. Increasingly the web is used as the medium of choice for

buying (or often just downloading free of charge) music, books and fi lms as well as
for booking holidays and buying goods.

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