PHP:这段正则是验证啥的,看不懂?该怎么处理

WBOY
Release: 2016-06-13 12:24:29
Original
922 people have browsed it

PHP:这段正则是验证啥的,看不懂?
这段正则是验证啥的,看不懂?
/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|\xe0[\xa0-\xbf][\x80-\xbf]|[\xe1-\xef][\x80-\xbf][\x80-\xbf]|\xf0[\x90-\xbf][\x80-\xbf][\x80-\xbf]|[\xf1-\xf7][\x80-\xbf][\x80-\xbf][\x80-\xbf]/

求教!!!
------解决思路----------------------
验证是否为 utf-8 字符

其中
[\x01-\x7f] 单字节 utf-8
[\xc2-\xdf][\x80-\xbf] 2字节 utf-8
\xe0[\xa0-\xbf][\x80-\xbf] 3字节 utf-8
[\xe1-\xef][\x80-\xbf][\x80-\xbf] 3字节 utf-8
\xf0[\x90-\xbf][\x80-\xbf][\x80-\xbf] 4字节 utf-8
[\xf1-\xf7][\x80-\xbf][\x80-\xbf][\x80-\xbf] 5字节 utf-8

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!