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Create CAPTCHA images
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Create CAPTCHA images
http://www.icemelon.com/tutorials/23/Create_CAPTCHA_images.htm
First off, you may be wondering what a CAPTCHA image is. Here's a brief synopsis from Wikipedia:
PHP > Tips and Tutorials > Image Manipulation
Oct 15, 2006
dave
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Other links at PHP > Tips and Tutorials > Image Manipulation
This tutorial we will show how to create images with PHP.
Requeriments: GD library must be installed in the server (probably it is installed).
Requeriments: GD library must be installed in the server (probably it is installed).
Category:
2. GD Library
Navigate: PHP Tutorials > PHP > Graphics, Graphing and Image Manipulation
Category:
image, directory listing and image size and outputs a thumbnail with the specifications.
Category:
Creating images on the fly can be a very useful skill. PHP has some built-in image generation functions, further more, to generate new images or edit existing images on the fly using PHP, we need to have the GD library installed. In this tutorial we will show you how to get quite interesting and useful effects using image handling functions. We will review two practical tasks: creating security images (captcha) on the fly and building a bar chart using numerical values retrieved from MySQL database.
Category:
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