August 2000
Intermediate to advanced
800 pages
13h 15m
English
Content preview from Core PHP Programming: Using PHP to Build Dynamic Web SitesBecome 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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Database Abstraction Layers
Imagine creating a Web application that uses MySQL and later being asked to make it work with Oracle. All the PHP functions are different, so you'd have to change every one. In addition, as MySQL and Oracle each use slightly different SQL, you will probably have to change most of your queries. One solution to this problem is adding an abstraction layer. This separates your business logic—the rules of your application—from the code that interfaces with the database. A single function calls the right function based on the type of database you need to query.
Perhaps the most popular database abstraction layer is part of the PHP Base Library <http://phplib.netuse.de/ >. This library also contains code for session management. ...
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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.