image verification not working?

digitalLotus · April 18, 2007

Alright, I've posted this before in the "PHP Help" forum, however this post probably belongs better here.

I've been searching for an image verification script i can use for my registration form and found this one ( added below ). The only problem I somehow have is the fact that no matter what code I enter, it's accepted as correct and I receive the response "You are verified".

I might as well also point out that I'm quite new on the PHP platform.

verification.php:

 <?php
Header("Content-Type: image/png");

session_start();

$new_string;

session_register('new_string');

echo "<html><head><title>Verification</title></head>";
echo "<body>";

$im = ImageCreate(200, 40);

$white = ImageColorAllocate($im, 255, 255, 255);
$black = ImageColorAllocate($im, 0, 0, 0);

srand((double)microtime()*1000000);

$string = md5(rand(0,9999));

$new_string = substr($string, 17, 5);


ImageFill($im, 0, 0, $black);

ImageString($im, 4, 96, 19, $new_string, $white);

ImagePNG($im, "verify.png");
ImageDestroy($im);

echo "<img src=\"verify.png\">";
echo "<br><br>";
echo "Type the code you see in the image in the box below. (case sensitive)";
echo " <form action=\"formhandler.php\" method=post>";
echo "<input name=\"random\" type=\"text\" value=\"\">";
echo "<input type=\"submit\">";
echo "</form>";
echo "</body>";
echo "</html>";
?>

formhandler.php:

 <?php

session_start();

$random = trim($random);

if ($new_string == $random){
echo "You are verified";
}
else{
echo "Please go back and get verified.";
}
?>

Thanks in advance for any help.

Cheers.

digitalLotus · April 18, 2007

Alright, it was solved here thanks to HeyRay2.

Cheers

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image verification not working?

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