Table of Content:
- Creating a grayscale image
- Tinting an image
- Web safe colours
PHP: Working with Image colour
Using the free GDLib extensions to PHP, we can dynamically make thumbnails, save images to disc and manipulate them in other ways. in this tutorial, Allan shows how to manipulate the colours within an image, either to tint them or greyscale them (we've seen this technique used in an application that allows you to upload images into an on-line "newspaper" complete with black and white photographs!).
This tutorial assumes no prior knowledge of PHP.
This tutorial assumes no prior knowledge of PHP.
Allan Kent
Allan comes from Cape Town, South Africa. He has been implicated in writing for several WROX, glasshaus, Wiley and Apress publications, generally in the 'cool stuff that PHP can do' sections.
You can catch up with him at his website http://www.mediafrenzy.co.za.