Advisories Mishap

[Farmtalk]

I am trying to make the advisories summary for the top of my website, but there is something wrong in the coding, could somewhere care to tell me what it is??

<?php
  if ( isset($_GET['zone']) ) {
   $DefaultZone = $_GET['zone'];
} else {
   $DefaultZone = 'WVZ027'; // set to your NOAA zone
}?>