June 2002
Intermediate to advanced
800 pages
16h 3m
English
Content preview from PHP and PostgreSQL: Advanced Web ProgrammingBecome 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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16.1. Creating Dynamic Images
PHP supports many functions for generating or modifying images on-the-fly. These functions are mostly built on the GD library, which you can download from http://www.boutell.com/gd. In most binary distributions of PHP, the GD module is included. If you are compiling your binaries yourself, the GD module has to be enabled at compile time using --with-gd when running configure. In addition, support for JPG should be enabled.
After you have compiled PHP to your needs, you can start working with the module. In this section you will learn to perform all basic operations when working with images and you will also see how text can be processed efficiently.
16.1.1. Basic Operations
The first thing to do when generating a ...
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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.