public function whereIn($field, $val_arr, $alias = null) { $len = count($val_arr); for ($i = 0; $i < $len; $i++) { $val_arr[$i] = "'" . $this->adapter->esc($val_arr[$i]) . "'"; } $vals_str = implode(', ', $val_arr); return $this->where("{$field} IN({$vals_str})", $alias); }