1.什么是mysqlnd驱动? PHP手册上的描述: MySQL Native Driver is a replacement for the MySQL Client Library (libmysql). MySQL Native Driver is part of the official PHP sources as of PHP 5.3.0. mysqldnd即mysql native driver简写,即是由PHP源码提供的mysql驱动连接代码.它的目的是代替旧的libmysql驱