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Preg_replace 单个汉字的问题

WBOY
Release： 2016-06-23 13:13:14
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windows下，php.ini设置为 GBK

preg_replace('/[汉字]/','呵','555汉字555')


为什么会变成 555呵呵呵呵555，
我想要的是 555呵呵555，一个中文对应一个 【呵】，结果一个中文对应了两个【呵】，
是因为一个中文等于两个字符吗。
怎么才能得到我要的结果。


回复讨论(解决方案)

preg_replace('/[\x80-\xff]./','呵','555汉字555')
Copy after login

我就要查找替换【汉字】这两个字，不是要查找中文集。

也就是要查找替换指定的汉字

就上面那个例子就是当出现【汉】或【字】的时候替换，而不是一出现中文就替换。 

echo preg_replace('/汉|字/','呵','555汉字555');
Copy after login
555呵呵555

嘿，神了，原来是我写错了。

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Preg_replace 单个汉字的问题
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