jQuery UI is a curated set of user interface interactions, effects, widgets, and themes built on top of the jQuery JavaScript Library. Whether you're building highly interactive web applications or you just need to add a date picker to a form control.
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PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.
The Open Graph protocol enables any web page to become a rich object in a social graph, a open protocol supported by Facebook