Security Code Problem

[xsubs]

I tried to build a security code,

i think i succeed, but it doesn't work well.

I mean, sometimes it works and redirect you, and sometime it just refresh the page (i dont know why!), and there is no response.

 

This is my code:

<link rel="stylesheet" type="text/css" href="http://www.extremesubs.org/Functions/style.css">
<?php
function createImage(){
if (!isset($_COOKIE['AiSC'])) {
        	$fileName = md5(rand(100000,999999));

        	$Text = rand(1000,9999);

	$CreatePic = imagecreatetruecolor(150, 43);
	$White = imagecolorallocate($CreatePic, 255, 255, 255);

   		imagefilledrectangle($CreatePic, 0, 0, 700, 200, $White);


	$Color = imagecolorallocate($CreatePic, rand(0,200), rand(0,200), rand(0,200));
	$font = 'arialbd';
	$angle = rand(-5,6);

// Adds the text

imagettftext($CreatePic, 20, $angle, 30, 33, $Color, $font, $Text);
$Output= "pictures/$fileName.gif";

imagegif($CreatePic,$Output);

setcookie("AiSC", $Text, time()+1200, "/");

setcookie("AiSCT", $Output, time()+1200, "/");

	return $Output;
} else {
	return $_COOKIE['AiSCT'];
}
}
// Checks if equal
if (isset($_POST['send'])) {
	if ($_POST['code'] == $_COOKIE['AiSC']) {
unlink($_COOKIE['AiSCT']);
setcookie("AiSC", $Text, time()-1200, "/");
setcookie("AiSCT", $Output, time()-1200, "/");
		echo "<script language='JavaScript'>window.location=('Download.php?id=".$_GET['id']."');</script>";
	} else {
		echo "<script language=\"JavaScript\">alert(\"קוד האבטחה שהקשת אינו זהה לקוד המקורי.\");</script>";
	}
}
?>
  <form action="" method="post" name="SecurityCodeForm" enctype="multipart/form-data">
<div align="center" style="font-family:arial;font-weight:bold;font-size:12px;color:black;direction:rtl;" class="Security">
הקלד בבקשה את הטקסט שבתיבה, ולאחר מכן לחץ על "הורד".<br>
<table border="0" celspacing="0" style="height:45;">
  <tr>
    <td>
<img src="<?=createImage();?>">
    </td>
    <td>
<input type="text" name="code" style="font-family:arialbd;font-size:20px;font-color:black;width:150px;height:45px;direction:ltr;vertical-align:baseline;">
    </td>
  </tr>
  <tr>
    <td colspan="2" align="center">
<input type="submit" name="send" style="font-family:arialbd;font-size:12px;font-color:black;width:100px;height:25px;direction:ltr;vertical-align:baseline;" class="InputButton" value="הורד תרגום">
</table>
</form>

 

What can i change to make it work better?

Thanks.

[xsubs]

Please!!!

[purefan]

hmmm... would you mind telling what is it supposed to do?

[rajivgonsalves]

instead of

if (isset($_POST['send'])) {
if ($_POST['code'] == $_COOKIE['AiSC']) {

 

try

 

if (isset($_POST['code'])) {
	if ($_POST['code'] == $_COOKIE['AiSC']) {

[rajivgonsalves]

the above should work the problem would be if the user hits enter in the code box then the submit value does not come in, it only comes when you click on submit