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php中的 $代表变量,但是这个变量是什么类型怎么知道

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Release: 2016-06-13 12:33:10
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php中的 $代表变量,但是这个变量是什么类型如何知道?
php中的 $代表变量,但是这个变量是什么类型如何知道?

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