/** * クエリ発行 内部使用 * * @param string $sql SQL文 * * @return PDOStatement PDOStatement */ protected function _query($sql) { $binds = array_merge($this->set_binds, $this->condition_binds); $st = self::$db->prepare($sql); $st->execute($binds); self::$last_sql = $sql; return $st; }