PHP mail form

[robin9000]

I don't know how to code in PHP and was just wondering if someone could tell me if the PHP form I am using is secure against email stealing robots.
The link to my form is:
http://www.robinsden.110mb.com/home/contact.php

If this is not a secure form can someone help me out by directing my to a form they know to be secure against this type of thing.

Even better yet dose someone have one they know is secure against that.

It dose not have to be in PHP but I am assuming that is what these forms are all written in.

Thanks for any help.:)

[Snookerman]

We can't see the PHP code, you will have to post it here.

[robin9000]

sorry about the long format I would put it in between arrows but I don't know how to

<?php

echo $_SERVER['HTTP_REFERER'];

?>

<?php
/* PHP Form Mailer - phpFormMailer v2.2, last updated 23rd Jan 2008 - check back often for updates!
(easy to use and more secure than many cgi form mailers) FREE from:
www.TheDemoSite.co.uk
Should work fine on most Unix/Linux platforms
for a Windows version see: asp.thedemosite.co.uk
*/

// ------- three variables you MUST change below -------------------------------------------------------
$replyemail="robinsden@live.ca";//change to your email address
$valid_ref1="http://www.robinsden.110mb.com/home/contact.php";// chamge "Your--domain" to your domain
$valid_ref2="http://www.robinsden.110mb.com/home/contact.php";// chamge "Your--domain" to your domain
// -------- No changes required below here -------------------------------------------------------------
// email variable not set - load $valid_ref1 page
if (!isset($_POST['email']))
{
echo "<script language=\"JavaScript\"><!--\n ";
echo "top.location.href = \"$valid_ref1\"; \n// --></script>";
exit;
}

$ref_page=$_SERVER["HTTP_REFERER"];
$valid_referrer=0;
if($ref_page==$valid_ref1) $valid_referrer=1;
elseif($ref_page==$valid_ref2) $valid_referrer=1;
if(!$valid_referrer)
{
echo "<script language=\"JavaScript\"><!--\n alert(\"ERROR - not sent.\\n\\nCheck your 'valid_ref1' and 'valid_ref2' are correct within contact_process.php.\");\n";
echo "top.location.href = \"contact.html\"; \n// --></script>";
exit;
}

//check user input for possible header injection attempts!
function is_forbidden($str,$check_all_patterns = true)
{
$patterns[0] = 'content-type:';
$patterns[1] = 'mime-version';
$patterns[2] = 'multipart/mixed';
$patterns[3] = 'Content-Transfer-Encoding';
$patterns[4] = 'to:';
$patterns[5] = 'cc:';
$patterns[6] = 'bcc:';
$forbidden = 0;
for ($i=0; $i<count($patterns); $i++)
{
$forbidden = eregi($patterns[$i], strtolower($str));
if ($forbidden) break;
}
//check for line breaks if checking all patterns
if ($check_all_patterns AND !$forbidden) $forbidden = preg_match("/(%0a|%0d|\\n+|\\r+)/i", $str);
if ($forbidden)
{
echo "<font color=red><center><h3>STOP! Message not sent.</font></h3><br><b>
The text you entered is forbidden, it includes one or more of the following:
<br><textarea rows=9 cols=25>";
foreach ($patterns as $key => $value) echo $value."\n";
echo "\\n\n\\r</textarea><br>Click back on your browser, remove the above characters and try again.
</b><br><br><br><br>Thankfully protected by phpFormMailer freely available from:
<a href=\"http://thedemosite.co.uk/phpformmailer/\">http://thedemosite.co.uk/phpformmailer/</a>";
exit();
}
else return $str;
}

$name = is_forbidden($_POST["name"]);
$email = is_forbidden($_POST["email"]);
$thesubject = is_forbidden($_POST["thesubject"]);
$themessage = is_forbidden($_POST["themessage"], false);

$success_sent_msg='<p align="center"><strong>&nbsp;</strong></p>
<p align="center"><strong>Your message has been successfully sent to us<br>
</strong> and we will reply as soon as possible.</p>
<p align="center">A copy of your query has been sent to you.</p>
<p align="center">Thank you for contacting us.</p>';

$replymessage = "Hi $name

Thank you for your email.

We will endeavour to reply to you shortly.

Please DO NOT reply to this email.

Below is a copy of the message you submitted:
--------------------------------------------------
Subject: $thesubject
Query:
$themessage
--------------------------------------------------

Thank you";

$themessage = "name: $name \nQuery: $themessage";
mail("$replyemail",
"$thesubject",
"$themessage",
"From: $email\nReply-To: $email");
mail("$email",
"Receipt: $thesubject",
"$replymessage",
"From: $replyemail\nReply-To: $replyemail");
echo $success_sent_msg;
/*
PHP Form Mailer - phpFormMailer (easy to use and more secure than many cgi form mailers)
FREE from:

www.TheDemoSite.co.uk */
?>