php form mail

[Skills07]

ecco qui il php

<?php
if(isset($_POST['email'])){
    $email_to = "wirelessfinderitalia@gmail.com";
    $email_subject = "contact_form";

    function died($error){
        echo "We are very sorry, but there were error(s) found with the form you submitted. ";
        echo "These errors appear below.<br /><br />";
        echo $error."<br /><br />";
        echo "Please go back and fix these errors.<br /><br />";
        die();
    }

    if(!isset($_POST['fname']) ||
        !isset($_POST['email']) ||
        !isset($_POST['country']) ||
        !isset($_POST['subject'])
    ){
        died("We are sorry, but there appears to be a problem with the form you submitted. ");
    }

    $name = $_POST['fname'];
    $email = $_POST['email'];
    $country = $_POST['country'];
    $subject = $_POST['subject'];

    $error_message = "";
    $email_exp = '/^[A-Za-z0-9._%-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$/';

    if(!preg_match($email_exp, $email)){
        $error_message .= 'The email address you entred does not appear to be valid.<br />';
    }

    $string_exp = "/^[A-Za-z .' -]+$/";

    if(!preg_match($string_exp, $name)){
        $error_message .= 'The first name/last name is not valid.<br />';
    }

    if(!preg_match($string_exp, $subject)){
        $error_message .= 'The subject is not 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);
    }

    $email_message .= "First name, Last Name :" .clean_string($name)."\n";
    $email_message .= "Email :" .clean_string($email)."\n";
    $email_message .= "Country :" .clean_string($country)."\n";
    $email_message -= "Subject :" .clean_string($subject)."\n";

    //create email headers
    $headers = 'From: '.$email."\r\n".
    'Reply-To: '.$email."\r\n".
    'X-Mailer: PHP/' .phpversion();
    @mail($email_to, $email_subject, $email_message, $headers);
    ?>

    <!-- include your own success html here -->

    Thank you for contacting us. We will be in touch with you very soon as possibile.

    <?php

}

?>
}