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请问一个php有关问题

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Release： 2016-06-13 10:33:04
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请教一个php问题.

PHP code
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->$str .= $txt[++$i] ^ $tmp;
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搞不明白这个^是什么意思? 具体有谁告诉我一下吗?

------解决方案--------------------
按位异或
------解决方案--------------------
按位异或运算符，看手册吧。http://www.php.net/manual/zh/language.operators.bitwise.php
Related labels：
bitwise language php
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