What is the correct way to specify mbstring.func_overload 2 for xampp?

Question

xampp

I prescribe this parameter php_admin_value mbstring.func_overload 2specifically for one site, but for some reason it affects everything and phpmyadmin stops working, if you remove it, then everything works.

<VirtualHost *:80>
    ServerAdmin [email protected]
    DocumentRoot "C:/Users/mavpo/Documents/Xampp/htdocs/maov.local"
    ServerName marov.local
    ServerAlias www.maov.local
    #ErrorLog "logs/maov.local-error.log"
    #CustomLog "logs/maov.local-access.log" common
    php_admin_value mbstring.func_overload 2
</VirtualHost>