mysqlnd是什么

Jun 06, 2016 pm 08:21 PM
mysql

mysqlnd是什么

mysqlnd是什么?

Mysql Native驱动(Mysql Native Driver 简称:mysqlnd )在PHP5.3.0版本中被引入。PHP5.4之后的版本mysqlnd被作为默认配置选项。 由zend 公司开发的MySQL数据库驱动,采用PHP开源协议(即 PHP license)避免了任何可能存在的版权问题。而旧的libmysql是有Mysql AB公司(现在的Oracle Corporation)开发,依照mysql license。它是新的函数库,libmysql有的功能它几乎都有,但是mysqlnd并不像libmysql那样作为通用库,它是专门为PHP而写的一个库,用了PHP的内在管理函数以及一些网络流的函数。

MySQLnd成为php 5.4中的默认mysql驱动,它有如下优点:

1、mysqlnd更容易编译; 因为它是php源码树的一个组成部分

2、mysqlnd和php内部机制结合更紧密,是优化过的mysql驱动

3、mysqlnd更节省内存,从测试结果来看,比传统的mysql扩展节省40%的内存

4、mysqlnd更快

5、mysqlnd提供了丰富的性能统计功能

6、mysqlnd使用了PHP license以避免不必要的版权纠纷

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