March 2002
Intermediate to advanced
592 pages
15h 52m
English
Content preview from Web Database Applications with PHP, and MySQLBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Templates
Separating code from HTML can be difficult in PHP. As we discussed in Chapter 1 and have shown throughout this book, one of the best features of PHP is that scripts can be embedded anywhere in HTML documents. However, this can lead to maintenance problems: if we want to redesign the presentation of the web site, then we may need to rewrite code or, at the very least, understand how PHP and HTML are interleaved in the application. This also makes it difficult to maintain code when it is interleaved with presentational components.
A good solution for medium- to large-scale web database applications is to use templates to separate markup and code. In this section, we illustrate how templates can be used in PHP applications through a case study example from the online winestore. In our example, we use the open source XTemplate class library available from http://sourceforge.net/projects/xtpl/. The XTemplate library is object-based, and Chapter 2 provides a brief introduction to the object-oriented features of PHP. There are other excellent template libraries, including most notably the Smarty PHP template engine available from http://www.phpinsider.com/php/code/Smarty/.
Templates in the Shipping Module
Example 13-1 and Example 13-2 show a template module that displays the order receipt. This script, called shipping.3, is a replacement for the shipping.2 script discussed in Chapter 12. The output of retrieving Example 13-2 with a Netscape web browser is shown in
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.