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php 如何做对比查询呀

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Release： 2016-06-13 13:29:29
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php 怎么做对比查询呀
我不明白怎么添加对比查询，其他部分都做好了 就是不知道怎么添加对比查询 要用什么方法添加呢 用到数据库吗？需要插入数据库吗？

------解决方案--------------------
应该有对比策略吧？要不要用到数据库，就看是否需要保存对比结果了。

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