send_form.php

<?php

/*
 * secure.contactform.php
 * Copyright (c) Jan Wiegelmann, http://wiegelmann.net
 * open sourced under the MIT license.
 * based on OpenPGP.js a JavaScript implementation of the OpenPGP standard.
 */

// your email address
$email_to = "your@mail.com"; 

if(isset($_POST['email'])) {
 
    function died($error) {
        echo "Sorry but there are error(s):<br /><br />";
        echo $error."<br /><br />";
        echo "Please go back and try again.<br /><br />";
        die();
    }
 
    if(!isset($_POST['email']) || !isset($_POST['subject']) || !isset($_POST['message'])) { 
        died('We are sorry, but there appears to be a problem with the form you submitted.');       
    }
 
    $email_from = $_POST['email']; 
    $subject = $_POST['subject']; 
    $message = $_POST['message']; 
    $error_message = "";
    $email_exp = '/^[A-Za-z0-9._%-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$/';
 
  if(!preg_match($email_exp,$email_from)) { 
    $error_message .= 'The Email Address you entered does not appear to be valid.<br />'; 
  }
  if(strlen($subject) < 1) { 
   	$error_message .= 'The Subject you entered does not appear to be valid.<br />';
  } 
  if(strlen($message) < 1) { 
    $error_message .= 'The Message you entered does not appear to be valid.<br />'; 
  } 
  if(strlen($error_message) > 0) { 
    died($error_message); 
  } 
  $email_message = "Form details below.\n\n";
 
  function clean_string($string) {
      $bad = array("content-type","bcc:","to:","cc:","href");
      return str_replace($bad,"",$string);
  }
  
$header = 'Content-Type: text/plain; charset=UTF-8' . "\n" . 'From: ' . $email_from . "\n" . 'X-Mailer: PHP/' . phpversion();

$message = str_replace("\r", "", $message);

@mail($email_to, $subject, $message, $header);  
 
?>
Thank you for contacting us.
<?php
}
?>