Combining Values before form submission

[ackerley1]

I am curious to know if there is a way to combine values from two drop down options (Month and Year) as on CC form, into one variable prior to the form being submitted.

I generate my drop down options prior initiating the form like this:

// Month Selector
for ($x=1;$x<=12;$x++) {
if ($x<=9) {
$a="0".$x;
} else {
$a=$x;
}
$values_a.="<option value='$a'>$a</option>";
}
// Year Selector
for ($y=7;$y<=20;$y++) {
if ($y<=9) {
$b="200".$y;
} else {
$b="20".$y;
}
$values_b.="<option value='$b'>$b</option>";
}

echo "<form method=post

And display them on the form like this:

<tr>
<td>
Expiration date
</td>
<td>
<select name=varExpDate>$values_a</select><select name=varExpDate>$values_b</select>
</td>
</tr>

So I need to combine both of them into one variable before sending it off for processing.

Any help would be appreciated.

Thanks

[speed]

You can use JavaScript to combine the values and store them in a hidden field.

However if the user doesn't have JavaScript enabled then the value won't be combined, mind neither would the options be generated. It's far better to do everything server side that matters.