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关于include跟include_once在使用上的意义

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Release： 2016-06-13 11:38:18
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关于include和include_once在使用上的意义
一般导入一个文件，都是只需要导入一次即可，那么为什么还存在include？require同理。

Related labels：
include nbsp once php require
source：php.cn
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