PHP & MySQL query problem

[Johny7126]

On a search page there is a UK map with a link for each region e.g:

<area shape="poly" coords="104,392,109,387,138,361,146,381,120,390,119,396,113,392,105,392" href="dealers_script.php?region=Cornwall" alt="Cornwall" title="Cornwall">
The problem is that I cannot get the first ifelse to work (shown below) i.e. the GET region if statement does not pass the value to the distanceUK function so theres a problem with the query.

The search results go by postcode therefore there has to be a query from region name to get postcode.

Ive tried debugging this for ages but with no luck.

This is the script for a dealer search page.

Thanks anyone

if(isset($_POST['postcode_dropdown']))
					{							
						$postcode = $_POST['postcode_dropdown'];
						getDistanceUK($postcode,100);
					}
					elseif(isset($_GET['region']))
					{
						$region = $_GET['region'];

					$region_sql = "SELECT postcode_1 FROM dealers WHERE dealer_region='$region'";						
					$region_sql_result = mysql_query($region_sql);					

					$row = mysql_fetch_array($region_sql_result);
					$postcode = $row['postcode_1'];

					getDistanceUK($postcode,100);						
				}		
				elseif(isset($_POST['postcode']))
				{
					$postcode = $_POST['postcode'];
					getDistanceUK($postcode,100);					
				}

				elseif(isset($_GET['postcode']))
				{
					$postcode = $_GET['postcode'];
					getDistanceUK($postcode,100);					
				}

[NogDog]

I've never really worked with <area>'s like that, but it would seem to me that if you clicked on an area, then it would access the URL with the query string specified for that area, setting $GET['region'], but there would be no $POST data since it is not submitting a form.

To verify, you might want to do var_dump()'s on $GET and $POST in the processing page to see what is actually received.