Parsing XML with PHP and Expat
There's more to XML than just composing XML documents and DTD files, although that certainly would be sufficient. One thing you can do with XML is parse it. Parsing XML is a matter of using an application or library to access XML files and check to make sure they are well-formed (free of errors) and valid. At the same time, the information can be transformed to suit other purposes. I'll explain all this in better detail.
A parser, in short, takes XML files and breaks them down into their various pieces. As an example, the code <artist>Air</artist> consists of the opening tag (<artist>), the content (Air) and the closing tag (</artist>). While this distinction is obvious to the human eye, it's a great feature of ...
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