Web 2.0, Web Development, PHP Programming: Web 2.0

Web 2.0, according to wikipedia web 2.0 is all about the changing trends in the use of World Wide Web technology and web design that aim to enhance creativity, communications, secure information sharing, collaboration and functionality of the web. Web 2.0 concepts have led to the development and evolution of web culture communities and hosted services, such as social-networking sites, video sharing sites, wikis, blogs and and folksonomies. But before we tackle more about Web 2.0 we should know about its origin.

World Wide Web began in 1980 when Sir Tim Berners-Lee built ENQUIRE (an information management system). With help from Robert Cailliau, he published a more formal proposal (on November 12, 1990) to build a "Hypertext project" called "WorldWideWeb" as a "web of nodes" with "hypertext documents" to store data. And in October 1994 Tim Berners-Lee after left the European Organization for Nuclear Research (CERN) to establish the World Wide Web Consortium (W3C). It was founded at the Massachusetts Institute of Technology Laboratory for Computer Science (MIT/LCS) with support from the Defense Advanced Research Projects Agency (DARPA)—which had pioneered the Internet—and the European Commission. And at that time Web 1.0 has already begun with some following characteristics:

Static pages instead of dynamic user-generated content.^[5]
The use of framesets.
Proprietary HTML extensions such as the blink and marquee tags introduced during the first browser war.
Online guestbooks.
GIF buttons, typically 88x31 pixels in size promoting web browsers and other products

And now here comes Web 2.0! From a static pages of Web 1.0 most Web pages today are now dynamic user-generated content, some examples are (blogger.com and social networking sites). From GIF buttons to advance animation such as (flash, ajax). And to summarize it all some features are the following:

Search (ease of finding information through keyword search)
Link (guides to important information/sites)
Authoring (the ability to create constantly updating content over a platform)
Tags (categorization of content by creating tags that are simple)
Extensions (automation of some of the work and pattern matching by using algorithms)
Signals (the use of RSS (Really Simple Syndication) technology to notify users with any changes of the content by sending e-mails to them)