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Core PHP Programming: Using PHP to Build Dynamic Web Sites by Leon Atkinson

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XML

Although the functions in this section come last, they are among the most important functions available. The extensible markup language, XML, has steadily grown in popularity since being introduced in 1996. XML is a first cousin to HTML in that it, too, is derived from SGML, a generalized markup language that is nearly 20 years old. Like HTML, XML documents surround textual data with tags. Unlike HTML, XML can be used to communicate any type of data. The best place to start learning about XML is its home page at the W3C <http://www.w3.org/XML/>. Among the resources there, you will find book recommendations.

The functions in this section wrap the Expat library developed by James Clark <http://www.jclark.com/xml/>. This library is part of the ...

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