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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