check if php variable is empty

[bob2006]

i am pulling the login date from the databases and i want it to check if the variable is empty and if it is echo Never Loged In and if it not empty echo the date

          <?php
          include'db.php';
	  $id=$_GET['id'];
	  $sql=mysql_query("SELECT * FROM admin WHERE id='$id'")or die(mysql_error());
	  while($row=mysql_fetch_array($sql))
	  {
	  $date=$row['login_date'];
	  if($date > 0)
	  {
	  echo"Never Loged In";
	  }
	  else
	  {
	  echo"$date";
	  }
	  }
	  ?>

[Anti-Moronic]

if(empty($date))

[bob2006]

Thanks