Graphics: Make Captcha
Jeanneret Cédric (contact me)
This class can be used to generate images for CAPTCHA validation.
It generates an image of a given size with a random text string rendered on the image.
The MD5 hash of the random text string is stored in a session variable for later verification.
The text font, size, color are configurable details.
The image is generated in the PNG format as output of the current script.
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