php formular

<?php

$ip = $_POST['ip'];
$httpref = $_POST['httpref'];
$httpagent = $_POST['httpagent'];
$visitor = $_POST['visitor'];
$visitormail = $_POST['visitormail'];
$notes = $_POST['notes'];
$attn = $_POST['attn'];


if (eregi('http:', $notes)) {
die ("Do NOT try that! ! ");
}
if(!$visitormail == "" && (!strstr($visitormail,"@") || !strstr($visitormail,".")))
{
echo "<h3>Vaša e-mailová adresa bola zadaná nesprávne</h3>\n";
$badinput = "Skúste to znovu v tvare <strong>kontakt@vysoketatry.us</strong>\n";
echo $badinput;
die ();
}

if(empty($visitor) || empty($visitormail) || empty($notes )) {
echo "<h2>Use Back - fill in all fields</h2>\n";
die ("Use back! ! ");
}

$todayis = date("d.m.Y H:i:s") ;

$attn = $attn ;
$subject = $attn;

$notes = stripcslashes($notes);

$message = " $todayis [EST] \n
Attention: $attn \n
Message: $notes \n
From: $visitor ($visitormail)\n
Additional Info : IP = $ip \n
Browser Info: $httpagent \n
Referral : $httpref \n
";

$from = "From: $visitormail\r\n";


mail("kontakt@vysoketatry.us", $subject, $message, $from);

?>

<p align="left">
<h3>Vaša správa bola úspešne odoslaná.</h3>
<strong>Odoslané dňa:</strong> <?php echo $todayis ?>
<br />
<strong>Správa pre:</strong> <?php echo $attn ?>
<br />
<strong>Vaša správa:</strong> <?php $notesout = str_replace("\r", "<br/>", $notes); echo $notesout; ?>
<br />
<strong>IP adresa:</strong> <?php echo $ip ?>
<br />
<br />
</p>

if (eregi('http:', $notes)) {
die ("Do NOT try that! ! ");
}
if(!$visitormail == "" && (!strstr($visitormail,"@") || !strstr($visitormail,".")))
{
echo "<h3>Vaša e-mailová adresa bola zadaná nesprávne</h3>\n";
$badinput = "Skúste to znovu v tvare <strong>kontakt@vysoketatry.us</strong>\n";
echo $badinput;
die ();
}

if(empty($visitor) || empty($visitormail) || empty($notes )) {
echo "<h2>Use Back - fill in all fields</h2>\n";
die ("Use back! ! ");
}

<?php
$name = $_POST['name'];
$study_done = $_POST['study_done'];
$study_school = $_POST['study_school'];
$certificate = $_POST['certificate'];
$email = $_POST['email'];

$email=trim($email);

   if(!empty($name) || !empty($study_done) || !empty($study_school)  || !empty($certificate) || !empty($email)) {
   

      $to = "tommy_ma2@hotmail.com";
      $subject = "Registration";
      $mailcontent = "Full name : " .$name. "\n"
                     . "Name of study programme done in the UK : " .$study_done. "\n"
                     . "Name of university or institution : " .$study_school. "\n"
                     . "Proof of studies in the UK : " .$certificate. "\n"
                     . "E-mail : " .$email. "\n";
      $fromadress = "From : webserver@example.com";
      
      mail($to,$subject,$mailcontent,$fromadress);
      
      echo "Email uspenš odoslatý !";
   
   }
   
   else {
      die('Nezadali ste potrebne udaje'); }
?>

 if(!empty($name) || !empty($study_done) || !empty($study_school)  || !empty($certificate) || !empty($email))

 if(!empty($name) && !empty($study_done) && !empty($study_school)  && !empty($certificate) && !empty($email))