<?php 
session_start(); // captcha class uses session to hold captcha security code  
include "class.captcha.php";  
 
$cap = new Captcha(); // instantiate Captcha class 
 
/* then, customize captcha image if required */ 
$cap->setBGColor(255,0,0);  // sets background color of image 
$cap->setTextColor(0,255,0); // sets the text color 
$cap->setSize(100,40); // sets the image size.  
/* all the above methods are optional */ 
 
$cap->showImage(); // outputs captcha image. 
 
 
?>
 
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