[英]regex with special characters in php
I'm trying to preg_replace charset=blablabla;
我正在尝试preg_replace
charset=blablabla;
and charset=blablabla"
with charset=utf-8;
and charset=utf-8"
. 和
charset=blablabla"
和charset=utf-8;
和charset=utf-8"
。 Please see ;
请看
;
=
and "
characters, and of course searched string can be lower/uppercase. =
和"
字符,当然搜索的字符串可以是小写/大写。
Can you help me? 你能帮助我吗?
You could replace the value with something like: 您可以将值替换为:
$subject = 'Testing... charset=baz; and charset=bat" :-)';
echo preg_replace('/(?<=charset=)[a-zA-Z0-9_-]+(?=[;"])/', 'utf-8', $subject);
// Testing... charset=utf-8; and charset=utf-8" :-)
Deconstructed, the regex matches: 解构后,正则表达式匹配:
charset=
(using a lookbehind ) charset=
紧跟的点(使用lookbehind ) 您可以尝试这样的事情。
echo preg_replace("#charset=[a-zA-Z0-9]+(\;)?#", "charset=utf-8$1", "charset=sdfsfsds");
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