php的Mysql低层接口发展到现在，已经有三种接口类型了，分别是：Mysql、Mysqli、PDO。Mysql属于最早期的Mysql数据库接口，不支持面向对象的调用方式。Mysqli及PDO开始都支持面向对象了。 　　这三种接口的使用

Packet : class_mysql.rar filelist
class_pdo.php
db_test.php
class_mysql_error.php
functions_log_error.php
class_mysqli.php
class_mysql.php

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