Graphics: PHP CAPTCHA with Refresh
Sanjoy Ganguly (contact me)
This class can be used to generate CAPTCHA validation images.
It generates an image with a given width and height display a random validation text with a given length. The generated random text is stored in a session variable for posterior validation.
The generated image is obfuscated by a given background image before being served as the current script output in JPEG format.
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Php Handleiding