Please Help!!! My contact form was exploited. What did I do wrong?
I got the PHP code from W3C Tutorials.
<?php
function spamcheck($field)
{
//filter_var() sanitizes the e-mail
//address using FILTER_SANITIZE_EMAIL
$field=filter_var($field, FILTER_SANITIZE_EMAIL);
//filter_var() validates the e-mail
//address using FILTER_VALIDATE_EMAIL
if(filter_var($field, FILTER_VALIDATE_EMAIL))
{
return TRUE;
}
else
{
return FALSE;
}
}
if (isset($_REQUEST['email']))
{//if "email" is filled out, proceed
//check if the email address is invalid
$mailcheck = spamcheck($_REQUEST['email']);
if ($mailcheck==FALSE)
{
echo "Invalid input";
}
else
{//send email
$email = $_REQUEST['email'] ;
$subject = $_REQUEST['subject'] ;
$message = $_REQUEST['message'] ;
mail("[email protected]", "Subject: $subject",
$message, "From: $email" );
echo "Thank you for contacting us. We will get back to you shortly";
}
}
else
{//if "email" is not filled out, display the form
echo "
Email:
Subject:
Message:
"; } ?>
Subject:
Message:
"; } ?>