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XML Parsing with PHP by John M. Stokes

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Introduction

Why XML?

Extensible Markup Language (XML), like most markup languages, including HTML, descends from Standard General Markup Language (SGML)1. XML version 1.0 was formally proposed by the Worldwide Web Consortium (W3C) in February 19982 and since then has permeated the online world and been adapted to countless applications.

XML has two major advantages: It is an incredibly flexible format, and it is human readable. XML has very few rules that govern its basic structure. As a result, anyone with a text editor can create a usable XML document with almost no training and because it is human readable, anyone can open an XML document and make some sense out of the data.

The fact that XML is human readable has caused some criticism. ...

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