code.php <?php session_start(); $rand = rand(100000,999999); $_SESSION['code']=$rand; $im = @imagecreate(45, 15); $background_color = imagecolorallocate($im, 220, 220, 220); $col = ImageColorAllocate($im, rand(0, 255), rand(0, 255), rand(0, 255) ); ImageString($im, 3, 2, 1, $rand, $col); header('Content-Type: image/png'); header('Cache-control: no-cache, no-store'); ImagePNG($im); ?> reg.php <?php if($_SESSION['code']!=$_POST['code'] or empty($_POST['code'])) $err = 'Код с картинки введен не верно!'; <center><img style="width:20%;" src="code.php?'.session_name().'='.session_id().'" alt="img"></center> <input style="text-align:center;" placeholder="Код" type="text" name="code" size="6"><br/> ?>