How to limit captcha characters ?

Question

How can I manually limit the characters in the captcha extension to 4 characters for example?
thanks for helping me!
adrian

Answer 1

Hi Adrian,
well I think I succeeded changing the char limit to, say, 4 :: at the bottom of the mentioned "KT_CaptchaImage.class.php" file you´ll see a function named "getRandomText" -- and in here there´s a line saying:
$_SESSION[$this->name] = substr($str, 0,
rand(5,8));
When changing the "random, between 5 and 8" values
(to, say, (5,7)) and reloading the page containing the captcha, the number of displayed chars changed as well, means I got between 5 and 7 chars, but never 8 as before.
In order to change it to *exactly* 4 chars, just use (4,4) here. You might as well do away with the "rand" function then, but that´s another story -- however, it works for me !
Günter Schenk
Adobe Community Expert, Dreamweaver