static function isRequiredPhone(&$DataProvider, $Key, $NoneKey = 'CheckLib_RequiredPhone_None', $TooLongKey = 'CheckLib_RequiredPhone_TooLong', $FormatKey = 'CheckLib_RequiredPhone_Format')
{
$ReturnValue = true;
$Value = $DataProvider->get($Key);
if (strlen($Value) > 0) {
$ReturnValue = CheckLib::isOptionalPhone($DataProvider, $Key, $TooLongKey, $FormatKey);
} else {
$ReturnValue = false;
$DataProvider->setError($Key, $NoneKey);
}
return $ReturnValue;
}
