Php uses regular expressions to verify Chinese characters

This article will share with you the simple and practical method of verifying whether a string contains Chinese characters using php, if you have any need, you can refer to php to use preg_match to match and determine whether a string contains Chinese or whether it is both Chinese. the method is as follows:

$ Str = 'php learning blog'; if (preg_match ('/[\ x7f-\ xff]/', $ str) {echo 'contains Chinese characters in the string
';} The else {echo' string does not contain Chinese characters
';} If (preg_match ('/^ [\ x7f-\ xff] + $/', $ str) {echo 'The string is all chinese ';} else {echo 'The string is not all Chinese ';}

The output result of the above program is:

The string contains Chinese characters.
The string is not Chinese.

UTF-8 and gbk encoding are tested and can be used.