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Need help displaying search results

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Hi all, I have a form that I use that posts to a php page.  I use mysql as my backend.

I am having trouble figuring out how I should query and display the results.  My criteria are as follows:

My searchable fields include type, state, city, zip, pricemin, pricemax, squarefeetmin, and squarefeetmax.
The field name for pricemin and pricemax is price.
The field name for squarefeetmin and squarefeetmax is squarefeet.

type and state are required fields.  The other fields are not required to be entered, but if they are, I would like the search narrowed on that criteria.

Could someone help me with my code?  I have gotten as far as running the query based on the required fields, but don't know how best to show the data based on the other non-required fields.  Here is my code.

<?PHP session_start(); ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Search Results</title>

mysql_pconnect("", "test", "test1") or die(mysql_error());
mysql_select_db("property") or die(mysql_error());

$type = $_POST['type'];
$state = $_POST['state'];
$city = $_POST['city'];
$zip = $_POST['zip'];
$pricemin = $_POST['pricemin'];
$pricemax = $_POST['pricemax'];
$squarefeetmin = $_POST['squarefeetmin'];
$squarefeetmax = $_POST['squarefeetmax'];

if(!isset($sl) || !isset($state))
        echo "Please fill in all of the fields required";
} else {

        $result = mysql_query("SELECT * FROM properties WHERE type='$type' and state='$state' ORDER BY price");

        while($row = mysql_fetch_array($result)) {

(I'm missing a ton of logic here)

                        echo "<B>Name</B>: ".$row['name'];
                        echo "<br><B>Type of Property</B>: ".$row['type']."<br />";
                        echo "<B>State</B>: ".$row['state']."<br />";
                        echo "<B>Price</B>: ".$row['price']."<br />";
                        echo "<B>Square feet</B>: ".$row['squarefeet']."<br /><br />";



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