| private areConvertable ( array $units ) : boolean | ||
| $units | array | units to test |
| return | boolean | true if all units can be converted, false if not |
private function areConvertable($units)
{
$convertable = array_keys(self::$unitConversion);
foreach ($units as $unit) {
if (!in_array($unit, $convertable)) {
return false;
}
}
return true;
}