RestService::getSelect

static function getSelect($rules, $fields, $default = array())
{
	$select = array();
	if (!empty($rules) && is_array($rules))
	{
		foreach ($rules as $field)
		{
			$field = mb_strtoupper($field);
			if (isset($fields[$field]) && !in_array($field, $select))
				$select[$field] = $fields[$field];
		}
	}

	return $select ? $select : $default;
}