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php cookie使用有关问题

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Release： 2016-06-13 13:21:51
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php cookie使用问题
现在很多购物展用到了 cookie 最大的用处就是 购物车 
我看了别人做的 如果不是会员 就生成一个cookie 然后把内容 插入到数据库中
现在我想问的是 怎么能让cookie失效时 删除数据库里的内容

------解决方案--------------------
写入cookie时总有个过期时间吧，数据库里也记录这个过期时间，然后用一个定时任务（每周，数据量大可以每天）清理一下过期的记录

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cookie nbsp php
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