Posts tagged Imagemagick

PHP Captcha 1.0 released

Jun 4th

Posted by Kerem in Linux

Today I am releasing PHP Captcha 1.0.

The main difference of PHP Captcha from other free or paid PHP implementations is, that it is written to utilize ImageMagick functions through the wonderful MagickWand PHP API to create CAPTCHA images that are hard enough for bots to crack, while more readable by humans than the others.

Quoting Aleksey Kolupaev of OCR Research Team, to whom I am thankful for his help on PHP Captcha:

“Everything can be cracked, but this one is a hard nut.”

Output of default configuration:

image1

Output of a custom (a little too unpractical) configuration:

image2

PHP Captcha has a lot of configuration options including:

  • Random background colors
  • Random background noise
  • Random text fill and stroke colors
  • Random text string length
  • Random font size
  • Random text direction
  • Random character rotation
  • Random image swirling
  • Random foreground noise and so on…

Continue reading...

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PHP Captcha beta testers needed

May 31st

Posted by Kerem in Linux

UPDATE: PHP Captcha 1.0 is released. Thanks to all who beta tested it.

I have started a new project named PHP Captcha which will be released as open source.

It will be a PHP Captcha implementation which will use ImageMagick instead of standard PHP GD libraries. It purpose is to create less crackable CAPTCHAs than the ones created with the readily available implementations that use GD.

I need beta testers who have some free time to test PHP Captcha. All you need to do is go to http://www.keremerkan.net/captchatest.php and solve the CAPTCHA that is written there. Please solve as many as you can, so that I can optimize the configuration.

Also I am getting help from Aleksey from OCR Research Team hoping to release PHP Captcha stronger than most two dimensional CAPTCHA implementations out on the wild. Thanks very much Aleksey for all your time.

Thanks to all who tested and still test PHP Captcha.

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