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OneClickCaptcha: CAPTCHA validation based on user clicks on circles

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Last Updated Ratings Unique User Downloads Download Rankings  
2013-04-15 (1 year ago) RSS 2.0 feedStarStarStar 58%Total: 673 This week: 1All time: 4,408 This week: 1,319Up
Version License PHP version Categories  
one-click-captcha 1.0.0GNU General Public Lice...5.0PHP 5, Graphics, Web services, Valida..., S...
Description Author  

This class can perform CAPTCHA validation based on user clicks on circles.

It render an image with several circles on random positions. Only one circle appears cut.

The class performs CAPTCHA validation by checking the position where the user clicks on the image to verify it it is inside of the circle that is cut.

The generated image is served in PNG format. The values of the rendered circles are stored in session variables for subsequent validation.

The size and colors of the image and the circles are configurable parameters.

Picture of Kacper Rowinski
Name: Kacper Rowinski <contact>
Classes: 5 packages by
Country: Poland Poland
Age: 30
All time rank: 142639 in Poland Poland
Week rank: 536 Up14 in Poland Poland Up
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  • occ.png
  Files folder image Files  
File Role Description
Accessible without login Plain text file example.php Example Example script
Plain text file oneClickCaptcha.php Class Class source

 Version Control Unique User Downloads Download Rankings  
 66%Total:673All time:4,408
 This week:1This week:1,319Up
User Ratings User Comments (1)  
 All time
Great idea.
1 year ago (Eduardo souza)