前不久做到一个项目需要用到购物车，考虑到可能经常用到，所以把它封装成一个类，以便以后调用。你可以简单的把这个类稍微修改一下就可以用在自己的程序里了，具体使用请见http://bigeagle.wotoo.com/article.asp?type=1。

<?
/*****************************************************************************/
/*                                                                           */
/* file type:      包含文件，建议后缀为.inc                                  */
/*                                                                           */
/* file name:      cart.inc                                                  */
/*                                                                           */
/* Description:    定义一个购车类                                            */
/*                                                                           */
/* Func list :     class cart                                                */
/*                                                                           */
/* author :        bigeagle