Is Your Captcha Broken ?

Proxy Coder — Sat, 26 Sep 2009 06:09:58 +0000

Is your captcha broken and can not be viewed on your proxy list?
There are three possibilities.
First, your PHP GD is not activated. Second, your mod_rewrite is not activated. Third, your environment setting.

Before checking everything, make sure you have uploaded all necessary files and directories (not even a single one should be ignored) :

“/includes/libs/animatedcaptcha_background/“. It contains the background images for the captcha. On the distribution package, it contains various GIF images.
“/includes/libs/animatedcaptcha_fonts/“. It contains various TTF fonts for the captcha.
“/includes/libs/animatedcaptcha_temp/“. This seems an empty directory. But still must exist. If you use animated captcha (which can be turned on optionally), this directory will be used and must be writable (chmod it to 777 – but only if you use animated captcha, if you just use the static one, you do not need to chmod it).
“/includes/libs/animatedcaptcha.class.php“. It is the core PHP class file for our captcha.

Problem on PHP GD

To check if the first issue happens, try to save this file into any file on your web hosting and open it from your browser.
If everything is fine, you should see a blue box (it is an image actually), with a text on it.




//

// (c) Xrvel.com & ProxyCoder.com

//

// This is just a PHP GD demo to test your environment

// You may delete this file if you want to.

//

if (!isset($_GET['debug'])) {

	header('Content-type: image/gif');

}

$image = imagecreate(300, 60);

$background_color = imagecolorallocate($image, 200, 200, 255);

$text_color = imagecolorallocate($image, 0, 0, 5);

imagefilledrectangle($image, 0, 0, 300, 60, $background_color);

imagestring($image, 20, 30, 10, 'THIS IS JUST A PHP GD DEMO', $text_color);

imagestring($image, 20, 30, 30, date('d-M-Y, H:i:s', time()), $text_color);

imagegif($image);

imagedestroy($image);

?>

Problem on mod_rewrite

The captcha is called as a rewritten link. The real URL is “animatedcaptcha.php”, but called on the page as “animatedcaptcha.gif”.
So try to open “http://www.yourwebsitehere.com/animatedcaptcha.gif“. Do you get “404 Not Found” error?

If you get “404 Not Found” error, it means your server has not activated the mod_rewrite. Try to open “http://www.yourwebsitehere.com/animatedcaptcha.php” instead. And if you can see the image now, you have two options :
1. First, ask your webhosting to activate the mod_rewrite.
2. Second, just use “animatedcaptcha.php” instead of “animatedcaptcha.gif“.
If not, there is no problem on your mod_rewrite.

Proxy Coder » Captcha

Is Your Captcha Broken ?

Problem on PHP GD

Problem on mod_rewrite