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To find out more about “No Nonsense XML Web Development with PHP”, visit the book’s information page, or review the contents of the entire publication. If ever there were a candidate for “Most Hyped Technology” during the late 90s and the current decade, it’s XML (though Java would be a close contender for the title).
As always, you can download this excerpt as a PDF if you prefer. Whenever I talk about XML with developers, designers, technical writers, or other Web professionals, the most common question I’m asked is, “What’s the big deal?
After we’re done exploring some terminology and examples, we’ll jump right in and start working with XML documents.
Then, we’ll spend some time starting the project we’ll develop through the course of this book: building an XML-powered content management system.
It walks you through the process of building a fully-functional XML-based content management system with PHP.
And all the code used in the book is available to customers in a downloadalbe archive.
In fact, the elements you’ll create in XML will be very similar to the elements you’ve already been creating in your HTML documents.
You may be able to convert HTML to XHTML using the Dave Raggett's HTML Tidy program (a HTML5 version also exists), which can clean up some of the horrible mess of pseudo-markup left behind by incompetent HTML editors, and even separate out some of the formatting to a stylesheet, but there is usually still some hand-editing to do.
If your HTML validly uses end-tag omission and unquoted attribute values, this can be fixed automatically by a normalisation program like (technical documentation) to choose from.
There were several sites for the exchange of new XML DTDs, but writing new ones is now rare.
If your HTML files fall into this category (HTML created by most WYSIWYG editors is usually invalid) then they will almost certainly have to be converted manually, although if the deformities are regular and carefully constructed, the files may actually be almost well-formed, and you could write a program or script to do as described above.
In this chapter, we’ll cover the basics of XML – essentially, most of the information you’ll need to know to get a handle on this exciting technology.