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DTML Basics (part 4)
Find out how to manipulate the variable namespace and build tree structures in DTML.

| A Long Goodbye |

Last time out, you learned about sequences, and how they could be processed with the <dtml-in> loop construct. You also learned about the special variables that DTML provides to developers to help them identify and take advantage of special sequence elements - the first element, the last element, odd and even elements and so on. Finally, you wrapped things up with a couple of simple applications based on sequences - a pager and a directory viewer.

In this final article in the series, I'm going to conclude this tour of DTML by introducing you to a couple of other members of the family - the <dtml-with> construct, which lets you manipulate the DTML namespace; the <dtml-let> construct, which lets you access variable values in different ways; and the <dtml-tree> construct, which provides a simple, widget-based interface to constructing tree structures in DTML.


How to do Everything with PHP & MySQL
How to do Everything with PHP & MySQL, the best-selling book by Melonfire, explains how to take full advantage of PHP's built-in support for MySQL and link the results of database queries to Web pages. You'll get full details on PHP programming and MySQL database development, and then you'll learn to use these two cutting-edge technologies together. Easy-to-follow sample applications include a PHP online shopping cart, a MySQL order tracking system, and a PHP/MySQL news publishing system.

Read more, or grab your copy now!


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