Hey guys,

I'm new at PHP and I got the form up and all situated but I would like to make the First Name, Last Name, E-Mail Address, and the zip code required fields but I don't know how to do it ... Below is my PHP document someone help and let me know what I need to do.

<?php
$to = "rjshowah@cox.net";
$subject = "Contact Us : Request";
$email = $_REQUEST['Mail'] ;

$message = ''.$_REQUEST['First'].' '.$_REQUEST['Last'].'
'.$_REQUEST['Mail'].'
'.$_REQUEST['Postal'].'
'.$_REQUES['Country'].'
'.$_REQUEST['Age'].'
'.$_REQUEST['Income'].'
'.$_REQUEST['Message'].'';

$sent = mail($to, $subject, $message, $headers) ;
if($sent)
{print "Your mail was sent successfully"; }
else
{print "We encountered an error sending your mail"; }
?>