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KCAPTCHA: Generate CAPTCHA validation images with effects

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Last Updated Ratings Unique User Downloads Download Rankings  
2008-04-06 (6 years ago) RSS 2.0 feedStarStarStarStar 67%Total: 4,299 All time: 619 This week: 1,433Down
Version License PHP version Categories  
kcaptcha 1.2.6GNU Lesser General Publ...4.0.6Graphics, Validation, Security
Description Author  

This class can be used to generate CAPTCHA validation images with the verification text rendered with distortion.

It generates a random text using a list of allowed characters.

The text is rendered as an image with several effects to distort the characters and make it more difficult to guess by automated programs.

The text is rendered with fonts defined as images in the PNG format. So it does not need any PHP special font engine library extensions.

The generated image is served as the current script output either in JPEG, GIF or PNG formats.

Picture of Sergei Kruglov
Name: Sergei Kruglov <contact>
Classes: 1 package by
Country: Russian Federation Russian Federation
Age: 37
All time rank: 63717 in Russian Federation Russian Federation
Week rank: 1730 Down52 in Russian Federation Russian Federation Down

Screenshots  
  • examples
  Files folder image Files  
File Role Description
Files folder imagefonts (23 files)
Files folder imageutil (1 file)
Plain text file kcaptcha.php Class Main class
Plain text file kcaptcha_config.php Conf. Config
Plain text file index.php Example Using KCAPTCHA class
Plain text file example.php Example Form example

  Files folder image Files  /  fonts  
File Role Description
  Plain text file .htaccess Data Deny HTTP access to fonts folder
  Image file antiqua.png Data font
  Image file baskerville.png Data font
  Image file batang.png Data font
  Image file bookman.png Data font
  Image file calisto.png Data font
  Image file cambria.png Data font
  Image file centaur.png Data font
  Image file century.png Data font
  Image file chaparral.png Data font
  Image file constantia.png Data font
  Image file footlight.png Data font
  Image file garamond.png Data font
  Image file georgia.png Data font
  Image file goudy_old.png Data font
  Image file kozuka.png Data font
  Image file lucida.png Data font
  Image file minion.png Data font
  Image file palatino.png Data font
  Image file perpetua.png Data font
  Image file rockwell.png Data font
  Image file times.png Data font
  Image file warnock.png Data font

  Files folder image Files  /  util  
File Role Description
  Plain text file font_preparer.php Aux. Adds symbols bounds marks to font files

 Version Control Unique User Downloads Download Rankings  
 0%Total:4,299All time:619
 This week:0This week:1,433Down
User Ratings User Comments (1)  
 All time
Utility:97%StarStarStarStarStar
Consistency:93%StarStarStarStarStar
Documentation:-
Examples:89%StarStarStarStarStar
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Overall:67%StarStarStarStar
Rank:362
 
Super Job.
6 years ago (sajidali)
70%StarStarStarStar