PHP Chinese regular

Recently, I followed the tutorial PHP Regular is used in the project , The tutorial only gives English regular , Here I'll add the Chinese ones by the way .

When Chinese is not supported ：

It should be noted that ：
PHP The following... Are not supported in regular expressions Perl Escape sequences ：\L, \l, \N, \P, \p, \U, \u, or \X
stay UTF-8 In mode , Allowed “\x {…}”, The content in curly brackets is a string representing a hexadecimal number . The original hexadecimal escape sequence \xhh If its value is greater than 127 And then it matches a double byte UTF-8 character .
So you can do this ：regex:/^[\x80-\xff_A-Za-z0-9-_]

The effect of the updated data is as follows ：