How does PHP determine whether it is Chinese or English?

#How does PHP determine whether it is Chinese or English?

In PHP, you can use regular rules to judge Chinese or English. The regular rules for judging English are "/^[^\x80-\xff] $/", and the regular rules for judging Chinese are "/^[" .chr(0xa1)."-".chr(0xff)."] $/", just judge the matching result when using it.

Usage examples

        

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