我试图从字符串中去除所有字符,除了:
I'm trying to strip all characters from a string except:
$
)_
)U+0080
和U+FFFF
之间的Unicode字符$
)_
)U+0080
and U+FFFF
我通过这样做获得了前三个条件:
I've got the first three conditions by doing this:
preg_replace('/[^a-zA-Zd$_]+/', '', $foo);
如何匹配第四个条件?我查看了使用 X
但有必须比列出 65000 多个字符更好.
How do I go about matching the fourth condition? I looked at using X
but there has to be a better way than listing out 65000+ characters.
您可以使用:
$foo = preg_replace('/[^w$x{0080}-x{FFFF}]+/u', '', $foo);
w
- 相当于 [a-zA-Z0-9_]
x{0080}-x{FFFF}
匹配代码点U
+0080和
U+FFFF`<之间的字符/li>/u
用于正则表达式中的 unicode 支持
w
- is equivalent of [a-zA-Z0-9_]
x{0080}-x{FFFF}
to match characters between code points U
+0080and
U+FFFF`/u
for unicode support in regex这篇关于一系列 unicode 点 PHP 的正则表达式的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持html5模板网!