Correct PHP matches regular expressions in UTF-8 Chinese

This article mainly introduced the correct PHP matching UTF-8 Chinese Regular expression, this article compares gives two different regular expressions, the need friend may refer to the next

I used to use it all the time.

The code is as follows:

Preg_match (' ~[x7f-xff]+~is ', $string, $tmp);

It was discovered today that this would also match the characters of some European countries

You should use the following to note that the modifier u

The code is as follows:

Preg_match (' ~[x{4e00}-x{9fa5}]+~u ', $string, $tmp);