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php preg_replace 乱码有关问题

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Release: 2016-06-13 13:07:30
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php preg_replace 乱码问题

还是用代码来说话吧:

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$pattern = "/ (href|src)=['|\"]http:\/\/(\w*\.?mysite\.com)\/([^\?'\"]*)['|\"]/i";

$repl = " \1='http://\2/\3?p=faskdfkasdkf'";

$result="中国人";
$result = preg_replace($pattern, $repl, $result);
echo $result;

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上面这段代码的作用,我就不解释了,可以自己执行一下。

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执行后你会发现出现有乱码,经过查资料发现是$repl写错了,应该用\\来做代替位置,正确格式如下:

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$repl = " \\1='http://\\2/\\3?p=faskdfkasdkf'";

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还有一点一定要注意:mb_ereg_replace 在并发情况下会内存泄露,造成压力测试无法通过。

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