PHP CAPTCHA problem facing?

A

ApurvA

New member
well i m facing problem while creating PHP captcha for ma form .. here is ma code ..

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captcha.php
-------------------
<body>
<?php
session_start();
header("Expires: Mon, 26 Jul 1997 05:00:00 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");

function _generateRandom($length=6)
{
$_rand_src = array(
array(48,57) //digits
, array(97,122) //lowercase chars
// , array(65,90) //uppercase chars
);
srand ((double) microtime() * 1000000);
$random_string = "";
for($i=0;$i<$length;$i++){
$i1=rand(0,sizeof($_rand_src)-1);
$random_string .= chr(rand($_rand_src[$i1][0],$_rand_src[$i1][1]));
}
return $random_string;
}

$im = @imagecreatefromjpeg("captcha.jpg");
$rand = _generateRandom(3);
$_SESSION['captcha'] = $rand;
ImageString($im, 5, 2, 2, $rand[0]." ".$rand[1]." ".$rand[2]." ", ImageColorAllocate ($im, 0, 0, 0));
$rand = _generateRandom(3);
ImageString($im, 5, 2, 2, " ".$rand[0]." ".$rand[1]." ".$rand[2], ImageColorAllocate ($im, 255, 0, 0));
Header ('Content-type: image/jpeg');
imagejpeg($im,NULL,100);
ImageDestroy($im);
?>

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form.php
---------------

<body>
<?php session_start() ?>

<form method="post" action="">
<table bgcolor="#CCCCCC">
<tr><th>Contact us (Post new message):</th></tr>
<tr><td><textarea cols="30" rows="5" name="message"></textarea></td></tr>
<tr><td align="center">CAPTCHA:<br>
(antispam code, 3 black symbols)<br>
<table><tr><td><img src="captcha.php" alt="captcha image"></td>
<td><input type="text" name="captcha" size="3" maxlength="3"></td></tr></table>
</td></tr>
<tr><th align="center"><input type="submit" value="Submit"></th></tr>
</table>
</form>
<?php
if(isset($_POST["captcha"]))
if($_SESSION["captcha"]==$_POST["captcha"])
{
//CAPTHCA is valid; proceed the message: save to database, send by e-mail ...
echo 'CAPTCHA is valid; proceed the message';
}
else
{
echo 'CAPTCHA is not valid; ignore submission';
}
?>

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the problem i m facing here when i open my form.php .. i m not able to see any kind of CAPTCHA IMAGE wht so ever .. i can just see the alt text which i typed .. and if i click on Validation button its although showing "invalid captha msg "

but not able to see any CAPTCHA ..

well for more information i m working in WAMP SERVER . .should i add or download any library for this to work .. or have i put the correct code .. or wht ..

please the real experts .. let me throw out of confusion by givin this answer ..

thank you ..

mitt
for more information for you .. i have also checked the correct path for <img src="filepath.php"> in ma "form.php" .. its perfect also .. still not working :(

help me if u can . .. thank you ..
 
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