本文分享一个带缓存数据功能的mysqli类，非常好用

复制代码 代码如下: <?php /** * Mysqli类 */ class db_mysqli { protected $mysqli; protected $sql; protected $rs; protected $query_num = 0; protected $fetch_mode = MYSQLI_ASSOC; protected $cache_dir = ‘./cache/’; protected $cache_time = 1800; public function