mysql常用类文件，远程控制代码，远程mysql实例-mysql commonly used class files, remote control code, remote mysql instance

制作自己的PHP+MYSQL的类,使用类封装常用SQL操作，简化代码.认识面向对象在开发中的重要作用.-Make your own PHP+ MySQL class, the use of such packages commonly used SQL operations, simplify the code. Recognize the important role of the object-oriented development.