PHP: image GD how to twirl and morp image

Posted on 2008-06-19
Medium Priority
Last Modified: 2008-06-26
how to make a a captcha to morp and spin?
so it look more hard for bot to read.

any idea?
Question by:alicca
  • 2
LVL 48

Expert Comment

ID: 21820628
not possible with native gd functions. You need to invoke an external programm which does the effects like gimp. Or use a different Captcha genrator.

Author Comment

ID: 21820742
any suggestion link that i can see the code?
LVL 48

Accepted Solution

hernst42 earned 2000 total points
ID: 21834799
We have a gimp function that does the operation (autocrop in my case) and invoke it from php like this:
$cmd = '/usr/bin/gimp -i --batch-interpreter plug_in_script_fu_eval -b \'(auto-crop-batch "'
            . $tmp . '" "' . $dst . '")\' \'(gimp-quit 0)\'';
$result = null;
exec($cmd, $msg, $result);

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