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异构编程-php中字符变量 异或 '1'^'2' 的值

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Release： 2016-06-02 11:32:24
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异构编程php

php中字符变量 异或 $a = '1'^'2' 的值 ？

在c语言中 值为3 在php执行后 var_dump($a)后发现是string ""类型 ，其实应该是有值的，请问下，运行的结果到底是什么

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异构编程 php
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