developed by me Sample; Usage; <img src="imgcode.php"> PHP: Download; http://rollonvideo.com/GD.zip Enjoy.
Will not work if cookies are disabled. Will fail on a Windows servers if the random number is 3. Will not work if short tags are disabled in php.ini What's the purpose of the variable $yardir in index.php? Other than that's it's nice. A bit spammy though.
It's working. 3.TTF chage file extension to ttf (lower) You can enable it's control variable for form submit and index.php a sample you can write your own form and script. Nice work ^^
Of course can you enable, but not everyone has access to the php.ini file, or can change values there. I'm just pointing out a few things that could be done better, so it works on any host without changing the configuration. This is just one of a few things you should keep in mind when you write public scripts. Always try to write it in a way that it works for everyone.
i couldn't have said it better myself. if you intend on writing and releasing a script you need to make sure that it's scalable across as many configurations as possible. short tags are nice and everything but i wouldn't recommend using them in scripts that are to be released into the public domain. as for the captcha itself, not bad.