<?php
	session_start();
	$Characters = '23456789abcdefghjklmnpqrstuvwxyz'; 
	$chars = 8;
	$Width = 150;
	$Height = 50;
	$i = 0;
	while ($i < $chars) { 
		$randomnr .= substr($Characters, mt_rand(0, strlen($Characters)-1), 1);
		$i++;
	}
	$_SESSION['randomnr2'] = md5($randomnr);
	$im = imagecreatetruecolor($Width, $Height);
	$front = imagecolorallocate($im, 255, 255, 255);
	$shadow = imagecolorallocate($im, 128, 128, 128);
	$background = imagecolorallocate($im, 83, 83, 83);
	imagefilledrectangle($im, 0, 0, $Width, $Height, $background);
	$font = './Artbrush.ttf';
	$angle1 = rand(-12, 12);
	$angle2 = rand(-12, 12);
	imagettftext($im, 25, $angle1, 20, 28, $shadow, $font, $randomnr);
	imagettftext($im, 20, $angle2, 30, 32, $front, $font, $randomnr);
	header("Expires: Wed, 1 Jan 1997 00:00:00 GMT");
	header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
	header("Cache-Control: no-store, no-cache, must-revalidate");
	header("Cache-Control: post-check=0, pre-check=0", false);
	header("Pragma: no-cache");
	header ("Content-type: image/gif");
	imagegif($im);
	imagedestroy($im);
?>