How to use regex to verify Chinese in PHP

This article shares with you how to use php to verify whether there is Chinese in a string. It is very simple and practical. Friends in need can refer to it

php uses preg_match to match and judge a string The method to determine whether contains Chinese or is all Chinese is as follows:

$str = 'php中文网';
if(preg_match('/[\x7f-\xff]/', $str)){
 echo &#39;字符串中有中文<br/>&#39;;
}else{
 echo &#39;字符串中没有中文<br/>&#39;;
}

if(preg_match(&#39;/^[\x7f-\xff]+$/&#39;, $str)){
 echo &#39;字符串全是中文&#39;;
}else{
 echo &#39;字符串不全是中文&#39;;
}

The output result of the above program is:

String There are Chinese characters in
, but not all strings are in Chinese characters.

We have conducted some tests under utf-8 and gbk encoding, and both can be used.

Summary: The above is the entire content of this article, I hope it will be helpful to everyone's study.

Related recommendations:

phpDetailed graphic explanation of string replacement, splitting and connection methods

phpSummary of file system processing methods

phpAchieve DES encryption and decryption examples consistent with c

#

The above is the detailed content of How to use regex to verify Chinese in PHP. For more information, please follow other related articles on the PHP Chinese website!