function getConfigTimezoneValue($tz, $timezone)
{
if ($tz != $timezone) {
// The user selected timezone is not equal to the
// environment timezone, so, must write the user
// selected value to the config file
$return = $tz;
} else {
// The user selected timezone is the same as the
// environment timezone, so we don't have to write the
// timezone to the config file - it will be set
// automatically by PHP.
$return = '';
}
return $return;
}