PHP Classes

OCR CAPTCHA: Generate images to test whether the user is human

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2004-04-13 (11 years ago) RSS 2.0 feedStarStarStar 54%Total: 7,306 All time: 242 This week: 1,151Down
Version License Categories  
ocr_captcha 1.0.0GNU General Publi...Graphics, Validation, Security
Description Author  

This class is meant to generate CAPTCHA (Completely Automated Public Turing to tell Computers from Humans Apart) images to test whether the user accessing a site is a real human or an automatic script.

The class generate an image with a random key text string printed on it mixed with some noise made of random text characters or line grid.

The image is meant to be used in a form so the user reads the key text in the image and must enter it to prove that is a real human.

The form also passes an hidden field that contains a public key that is used when the form is submitted to the server to verify whether the key text on the image matches what the user entered.

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Name: Julien PACHET <contact>
Classes: 15 packages by
Country: France France
Age: 39
All time rank: 271 in France France
Week rank: 344 Down16 in France France Down

  Files folder image Files  
File Role Description
Plain text file Class class file
Accessible without login Plain text file example.php Example test the class

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