Something like this:
<?php
$month = array(1 =>'January',
'February',
'March',
'April',
'May',
'June',
'July',
'August',
'September',
'October',
'November',
'December');
?>
<form method="post" action="<?php echo $_SERVER['PHP_SELF'];?>">
<?php
print "<select name ='month'>\n";
foreach ($month as $label => $option){
if (isset($_POST['month'])) {
if ($_POST['month'] ==$label){
print "<option value='".$label."' selected>".$option."</option>\n"; } else {
print "<option value='".$label."'>".$option."</option>\n";
}
} else {
print "<option value='".$label."'>".$option."</option>\n";
}
}
print "</select>\n";
?>
<input type="submit">
</form>