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MathGuard PHP Form spam protection

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Category: Form Processing
Script name: MathGuard PHP Form spam protection
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Detailed description: MathGuard is a PHP class that inserts a small piece of HTML code into your HTML form which requires the user to evaluate an expression consisting of two random numbers. When user submits the form with the answer, the answer is hashed and compared to the security code that has been submitted as well. This way you can easily protect your forms from spambots.
Server requirements: PHP 4+
Platform: All
This script is (note the submission types above): Free
Current version: v0.2
Script author: Matej Koval
Hits: 247
Script added: May 31, 2007
Number of Ratings: 2
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