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Message |
CMellor
Smarty Rookie
Joined: 22 Aug 2007
Posts: 8
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 Posted: Sat Oct 06, 2007 8:06 pm Post subject: Validate CAPTCHA |
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Hey,
I'm using the Captcha plugin with Smarty, but I can't for the life of me work out how to validate it to check if the input is correct.
I though this might do it:
| Code: |
// Check if captcha matches
if(md5($_POST['captcha_confirm']) == $_POST['captcha']) {
echo(1);
}
else {
echo(0);
} |
But it doesn't.
Any help on this is appreciated. |
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XP_Prem
Smarty Regular
Joined: 22 Jul 2005
Posts: 37
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| Posted: Sun Oct 07, 2007 2:46 am Post subject: |
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| why md5? |
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CMellor
Smarty Rookie
Joined: 22 Aug 2007
Posts: 8
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| Posted: Sun Oct 07, 2007 4:31 pm Post subject: |
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Why not? I assume to get the value of the hidden input, which is 32 characters in length, which is what is outputted when you md5 something, I'd have to md5 the value I typed in which matches the captcha code.
If I'm wrong, please correct me. |
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CMellor
Smarty Rookie
Joined: 22 Aug 2007
Posts: 8
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| Posted: Sun Oct 07, 2007 5:53 pm Post subject: |
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So yeah, I figured out there was a function that checks the codes, but that hasn't helped the situation. I tried this method:
| Code: | // Assign CAPTCHA
define('CAPTCHA_SALT', 'blah');
// Check if captcha matches
if(validate_captcha($_POST['captcha'], $_POST['captcha_confirm'])) {
echo 1;
}
else {
echo 0;
} |
But still nothing...
When I look at this function:
| Code: | function validate_captcha($md5, $code){
$shouldbe = md5($code . CAPTCHA_SALT . 'some salt' . $code .CAPTCHA_SALT . 'extra salt');
return ($shouldbe == $md5);
} |
I wonder if most of that $shouldbe variable is even necessary. |
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pstamb
Smarty Rookie
Joined: 29 Jan 2007
Posts: 7
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| Posted: Sun Oct 07, 2007 7:46 pm Post subject: |
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| Please check the validate.php file in the zip file. There you will see how it's done. |
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