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Another CAPTCHA project: CAPTCHA validation using animated images

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  Author Author  
Picture of László Zsidi
Name: László Zsidi <e-mail contact>
Packages: 13 Browse all classes by László Zsidi Browse all classes by
Country: Hungary Hungary - PHP jobs in Hungary
Age: 40
All time rank: 341 in Hungary Hungary
Week rank: 27 Up2 in Hungary Hungary Down
Innovation award
Innovation award
Nominee: 10x

Winner: 1x

  Detailed description   Download Download .zip .tar.gz   Install with Composer Install with Composer  
This package can be used to perform human user validation using CAPTCHA images (Completely Automated Public Turing to tell Computers from Humans Apart).

It generates a sequence of animated images, assembled with in a GIF animation file, to make it more difficult to break by robots because the validation text does not completely appear in each of the animation images.

The text length, color and font are configurable.

  Classes of László Zsidi  >  Another CAPTCHA project  >  Download Download .zip .tar.gz  >  Support forum Support forum (5)  >  Blog Blog  >  RSS 1.0 feed RSS 2.0 feed Latest changes  
Name: Another CAPTCHA project
Base name: animated_captcha
Description: CAPTCHA validation using animated images
Version: 1.0.0
PHP version: -
License: Freeware
All time users: 5422 users
All time rank: 405
Week users: 1 user
Week rank: 1813 Down
  Groups   Screenshots Screenshots   Rate classes User ratings   Dependencies  
  Trackback   Applications   Related links   Files Files  

Group folder image Graphics Colors, images, charts and picture formats View top rated classes
Group folder image Validation Validation algorithms View top rated classes
Group folder image Security Security protection and attack detection View top rated classes

  Files folder image Screenshots  
Example CAPTCHA image
File Role Description
Accessible without login Image file captcha.gif Screen Example CAPTCHA image
Accessible without login Image file Captcha_volume2.gif Screen Captcha vol.2 class screenshot

  Innovation Award  
PHP Programming Innovation award winner
October 2006
CAPTCHA validation has become a widely adopted method to prevent that people use robot scripts to abuse from Web site content or services.

It uses images with fuzzy text to make it more difficult for robots that attempt to automatically read the text that is written. Meanwhile, several techniques have been developed to discover the text in the CAPTCHA validation images.

This class provides a more advanced solution that employs animated images to render the verification text.

It raises the bar in terms of the difficulty that it imposes to robots, as the actual text is never completely displayed in each of the animated image frames.

Manuel Lemos

  User ratings  
RatingsUtility Consistency Documentation Examples Tests Videos Overall Rank
All time: Good (90.0%) Sufficient (76.7%) - Sufficient (78.3%) - - Sufficient (60.5%) 843
Month: Not yet rated by the users

  Packages needed by this class  
Class Dependency Why it is needed
GIF images into animated GIF with native PHP class Required Generating single animation

  Trackback links  
Link Description
Animated CAPTCHA in PHP Found an easy way to create animated CAPTCHAs in PHP...
Animierte CAPTCHAS? Ein Ungar macht es möglich: Another CAPTCHA project CAPTCHAS gibt es ja überall, und darunter gibt es wiederum schöne und weniger schöne...

  Applications that use this class  
No application links were specified for this class.
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  Related links  
Link Description
Demo pages CAPTCHA 2 demo page
Demo pages CAPTCHA 3 demo page
Demo pages CAPTCHA 4 demo page
Donate Page Donate to development
Download page Download originaly tested and packed CAPTCHA generators

  Files folder image Files  
File Role Description
Files folder imagecaptcha (1 file)
Files folder imagefonts (1 file)
Plain text file Captcha.class.php Class animated CAPTCHA creator class
Plain text file captcha.php Example CAPTCHA image resource file
Plain text file Captcha2.class.php Class Captcha.class.php - Volume 2
Plain text file index.php Example Example index file

  Files  /  Files folder image captcha  
File Role Description
  Plain text file captcha_files.txt Data CAPTCHA real files holder directory

  Files  /  Files folder image fonts  
File Role Description
  Plain text file fonts.txt Data Truetype fonts holder directory

Install with Composer Install with Composer - Download Download all files: animated_captcha.tar.gz animated_captcha.zip
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