Correct PHP matches UTF-8 Chinese regular expression, _php tutorial

The correct PHP matches the regular expression of UTF-8 Chinese,

I used to use this.
Copy the Code code as follows:
Preg_match (' ~[\x7f-\xff]+~is ', $string, $tmp);

It was only today that the above would match the characters of some European countries.
You should use the following, notice the modifier u
Copy the Code code as follows:
Preg_match (' ~[\x{4e00}-\x{9fa5}]+~u ', $string, $tmp);

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