Correct PHP match Regular Expression of UTF-8 Chinese

Correct PHP match Regular Expression of UTF-8 Chinese

This article mainly introduces the correct PHP matching UTF-8 Chinese regular expression, this article compares two different regular expressions, the need of friends can refer to the next

I used to use this

The Code is as follows:

Preg_match ('~ [\ X7f-\ xff] + ~ Is ', $ string, $ tmp );

It was discovered today that the above will also match characters from some European countries

The following should be used. Pay attention to the u modifier.

The Code is as follows:

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