如何在支持UTF-8的PHP中允许字符和空白

How to allow characters and whitspaces in PHP with UTF-8 support?

本文关键字：许字符字符空白支持 UTF-8 PHP | 更新日期: 2023-09-27

我想搜索/允许字符和空白。这适用于ANSI/LATIN-1字符:

$pattern = '#<a ['W'w]* href="1"#i';

我试过这个，但显然它不起作用:

mb_internal_encoding('UTF-8');
mb_regex_encoding("UTF-8");
$pattern = '/<a['pLN'W]* href="1"/ui';

$pattern = '~<a ['pL's]*'bhref="1"~ui';

<a  #begin with a tag + a space
['pL's]*  # zero or more unicode letters or blank characters (space newline tab)
'bhref="1" # href="1" not preceded by a letter or a number
ui # modifier u for unicode string, i case insensitive