Php regular expression judgment Chinese (automatic identification of UTF-8 & GBK encoding)

Source: Internet
Author: User
Tags php example php regular expression
The following example program is a PHP regular expression program that correctly matches UTF8 or gbk Chinese. it can accurately identify Chinese characters in different encoding conditions. The PHP example code is as follows :? Php $ actionnbsp... the following example program is a PHP regular expression program that correctly matches UTF8 or gbk Chinese. it can accurately identify Chinese characters in different encoding conditions.

The PHP instance code is as follows:

 
 

Gbk: the code is as follows:

Preg_match ("/^ [". chr (0xa1 ). "-". chr (0xff ). "A-Za-z0-9 _] + $/", $ str); // gb2312 Chinese characters, letters, numbers, underscores, regular expressions.


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