Kod:
// Kommer från adressen ex. http://domain.tld/form.php?opt=value2
$selected = isset($_GET["opt"]) ? $_GET["opt"] : "";
// Alla värden
$array = array('value1' => 'Värde 1',
* * * * * * * * * * * *'value2' => 'Värde 2');
echo "<select>";
foreach ($array as $key => $val):
echo "<option value='", $key, "'", ($key == $selected ? " selected" : ""), ">", $val, "</option>";
endforeach;
echo "</select>";