strrev(), like most other string functions, operate on bytes. They are not suitable for multibyte strings.

There is no "mb_strrev" function so I'm turning this ticket into a feature request for one.
Meanwhile the best option *for UTF-8 strings* I can think of is to use preg_split() or _match() with /u to split the input into characters, reverse the array, and implode() them back together.

A mb_strrev would not necessarily give the desired results, because
the mb_* functions work on code points (when dealing with UTF-8),
what doesn't cater to combining chars. A grapheme_strrev would be
more useful.

Thanks for reply me.I'm a begin PHP learner.I also konw it's can use the regular expression can deal with the problem.But it's so hard.I think if there can be an instruction can use,it will be better.Because there come to "mb_subtr()","mb_strpos()","mb_strstr()",why just add "mb_strrev"?
it's just my advice,thanks again for reply me.

PHP must implement a function like:

mb_strrev ( string $string [, string $encoding = mb_internal_encoding() ] ) : string


It is out of the question that a programming language cannot support multibyte encodings fully in this day and age.

Stackoverflow:
https://stackoverflow.com/questions/17496493/strrev-dosent-support-utf-8

The solution worked for me ok  to the community and the members for the solution. (https://www.myjdfaccount.us/)github.com