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PHP判断是否为空的几个函数对比

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Release: 2016-06-06 20:05:07
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这篇文章主要介绍了PHP判断是否为空的几个函数对比,本文讲解了gettype()、empty()、is_null()、isset()等几个函数在不同变量下的返回值情况,需要的朋友可以参考

直接上图表~~:

PHP判断是否为空的几个函数对比

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