public static function getCSVMap() { if (!is_null(self::$_csvmap)) { return self::$_csvmap; } $fp = fopen(__DIR__ . '/map.csv', 'r'); $columns = fgetcsv($fp); $csvmap = array(); while ($row = fgetcsv($fp)) { $csvmap[] = $row; } return self::$_csvmap = $csvmap; }