U L CAPTCHA is based on PHP to fight with spam. This is very easy to modify to suit your need.
This package also contains some font-files downloaded from 1001FreeFonts website.
Powered By Sourav Ghosh.
Follow Ultra Light CAPTCHA in PHP
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No instructions, so no work. Waste of time.
2 errors fixes described below. ---- Now that's an ultra light CAPTCHA. Thanks. ---- 1) Have broken image in <img /> and error msg on captcha.php: ... "Malformed header from CGI script: libpng warning: iCCP: known incorrect sRGB profile" ... Fix ... : Assign sRGB to all background PNGs in graphics editor like GIMP. This also reduces size of those images to like 40%. ---- 2) On Ubuntu apache2 I had no characters generated ... Fix ...: change fonts paths from 'font.ttf' to './font.ttf', so add './' part before the actual path.
Provides no instructions. readme.txt is only used for self promotion. 2 thumbs down.
Easy, simple, effective, strong CAPTCHA based on PHP and ready to use.