메일폼에 이메일 메세지는 4가지 이상 못하나요?

</strong></p>

<p> // validation expected data exists

    if(!isset($_POST['first_name']) ||

        !isset($_POST['email']) ||

        !isset($_POST['telephone']) ||

 </p>

<p>        !isset($_POST['comments'])){

        died('We are sorry, but there appears to be a problem with the form you submitted.');      

    }

    

    $first_name = $_POST['first_name']; // required

    $email_from = $_POST['email']; // required

    $telephone = $_POST['telephone']; // not required

 </p>

<p>

    $comments = $_POST['comments']; // required</p>

<p>    $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.
';

  }

   

  if(strlen($comments) < 2) {

    $error_message .= 'The Comments you entered do not appear to be valid.
';

  }

  if(strlen($error_message) > 0) {

    died($error_message);

  }

    $email_message = "";

    

    function clean_string($string) {

      $bad = array("content-type","bcc:","to:","cc:","href");

      return str_replace($bad,"",$string);

    }

    

    $email_message .= "이름 : ".clean_string($first_name)."\n\n";

    $email_message .= "이메일 : ".clean_string($email_from)."\n\n";

    $email_message .= "연락처 : ".clean_string($telephone)."\n\n";

 

    $email_message .= "주소 및 수거날짜 : ".clean_string($comments)."\n\n";

    

    </p>

<p><strong>