How to Validate this Code?

[blckspder]

I want to pass my contact form to a form to validate this random image number. How do I validate this number and then process my contact form? is there a way to validate the correct number was entered with in the image validation form? then send the original contact form to be processed and emailed? Please let me know thank you.

<?php 
session_start(); 

// generate  5 digit random number 
$rand = rand(10000, 99999); 

// create the hash for the random number and put it in the session 
$_SESSION['image_random_value'] = md5($rand); 

// create the image 
$image = imagecreate(60, 30); 

// use white as the background image 
$bgColor = imagecolorallocate ($image, 255, 255, 255);  

// the text color is black 
$textColor = imagecolorallocate ($image, 0, 0, 0);  

// write the random number 
imagestring ($image, 5, 5, 8,  $rand, $textColor);  

// send several headers to make sure the image is not cached     

// taken directly from the PHP Manual 

// Date in the past  

header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");  

// always modified  

header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");  

// HTTP/1.1  

header("Cache-Control: no-store, no-cache, must-revalidate");  

header("Cache-Control: post-check=0, pre-check=0", false);  

// HTTP/1.0  

header("Pragma: no-cache");      


// send the content type header so the image is displayed properly 
header('Content-type: image/jpeg'); 

// send the image to the browser 
imagejpeg($image); 

// destroy the image to free up the memory 
imagedestroy($image); 
?> 

</php>

[orbitphreak]

I wrote a tutorial on how to do this. I have a demo and code for you to download. here's the link:

http://www.digital-seven.net/index.php?option=com_content&task=view&id=67&Itemid=45

blckspder wrote:

I want to pass my contact form to a form to validate this random image number. How do I validate this number and then process my contact form? is there a way to validate the correct number was entered with in the image validation form? then send the original contact form to be processed and emailed? Please let me know thank you.

<?php 
session_start(); 

// generate  5 digit random number 
$rand = rand(10000, 99999); 

// create the hash for the random number and put it in the session 
$_SESSION['image_random_value'] = md5($rand); 

// create the image 
$image = imagecreate(60, 30); 

// use white as the background image 
$bgColor = imagecolorallocate ($image, 255, 255, 255);  

// the text color is black 
$textColor = imagecolorallocate ($image, 0, 0, 0);  

// write the random number 
imagestring ($image, 5, 5, 8,  $rand, $textColor);  

// send several headers to make sure the image is not cached     

// taken directly from the PHP Manual 

// Date in the past  

header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");  

// always modified  

header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");  

// HTTP/1.1  

header("Cache-Control: no-store, no-cache, must-revalidate");  

header("Cache-Control: post-check=0, pre-check=0", false);  

// HTTP/1.0  

header("Pragma: no-cache");      


// send the content type header so the image is displayed properly 
header('Content-type: image/jpeg'); 

// send the image to the browser 
imagejpeg($image); 

// destroy the image to free up the memory 
imagedestroy($image); 
?> 

</php>