Posted by Jon Slaughter on 06/08/07 21:57

I have a captcha system going and for some reason when I use

<?php

$s = "";
for($i = 0; $i < 10; $i++) { $s = $s.rand(0,9); }
$_SESSION['CaptchaValue'] = $s;
$fn = '/Login/Register/Captcha.php';
echo '<img src="'.$fn.'" alt="Captcha" />';
?>

and Captcha.php uses require_once or include to include some classes that I
use to generate the captcha then it fails(usually get alt showed). But when
I include the classes directly inside the file it works ;/

This is very strange behavior? It really shouldn't matter if I do that,
right? And it is also a security issue because then if they can read the php
I they can get how I generate them.

What I can I do?

captcha.php

<?php

// Captcha classes inserted here but removed for brevity

header("Content-type: image/png");
session_start();


$f = $_SERVER['DOCUMENT_ROOT'].'/Login/Register/';
//require_once($f.'Captcha.php');

$c = new Captcha();

$c->Fonts->Add($f."1.TTF", 0.23, 15, 2, 5, 0, 10, 20);
$c->Fonts->Add($f."2.TTF", 0.5, 15, 2, 5, 0, 10, 20);
$c->Fonts->Add($f."3.TTF", 0.27, 18, 2, 5, 0, 10, 20);
$c->Fonts->Add($f."4.TTF", 0.27, 18, 2, 5, 0, 10, 20);

$s = $_SESSION['CaptchaValue'];
$img = $c->Create($s);

imagepng($img);
imagedestroy($img);

?>



Now I know the require is working or atleast when I debug I can step through
the classes so I'm sure its including it but it acts almost as if I'm not
including it(except I don't get any errors about it).

What ends up happening is either I get the alt showed or I get something
where its like the image is missing(but you get the border for with the X
icon).

Any ideas?

Thanks,
Jon

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