if !isset multiple OR conditions

Question

I cannot get this to work for the life of me, it is PHP.

<?php
 if (!isset($_POST['ign']) || ($_POST['email'])) {

  echo "Please enter all of the values!";
    }

 else {

   echo "Thanks, " . $_POST['ign'] . ", you will recieve an email when the site is         complete!";

    }
    ?>

I've also tried using !isset twice.

Answer 1

This is how I solved this issue:

$expression = $_POST['ign'] || $_POST['email'] ;
if (!isset($expression) {
    echo "Please enter all of the values!";
}
else {
     echo "Thanks, " . $_POST['ign'] . ", you will recieve an email when the site is                              
              complete!";
}