Graphics: Security Image
Joel Finkel (contact me)
This class generates and display images with random text characters to perform a CAPTCHA test and verify whether the current site user is a real human or a robot script.
The class also displays a form with a text input to let the user enter the displayed characters to be verified.
The verification text length, size and color, as well as the background of the image that is generated, are all configurable parameters.
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