PHP Tutorial : How to validate the captcha (II)

Dec 20, 2008 Useful PHP

In the last tutorial I teached you how to generate a security image with php called captcha code. Also I teached you how to store that random security photo / image code in a php session : with a reason, to be able to validate it later. So here we are , on the page which action is pushed we do this to validate the captcha :

<?php
session_start();

if(isset($_SESSION['randomcode'])) {
//check if what user typed in input equals to session key
>if(md5($_POST['inputname']) == $_SESSION['randomcode']) {

print "GOOD, captcha correct!";
}else{

print "You didn't entered the captcha correct";
}
}
?>