Since the Chinese ASCII code has a certain range. So you can use the following regular expression to represent Chinese.
/ ^ [CHR (0xA1) -Chr (0xFF)] $ /
Here is an example:
$ Str = "Regular Expression Zhengzebiaodashi"; if (preg_match ("/ ^ [". Chr (0xA1). "-". chr (0xff). "] $ /", $ STR)) {echo "this is A pure Chinese string ";} else {echo" This is not a pure Chinese string ";
