Hi,
Contrary to the various versions of PHP which are distributed by php.net with examples of php.ini, the versions of MariaDB as well as MySQL are distributed without any example of my.ini.
I'm not going to spend my time reading the MariaDB and MySQL documentations for each new version to see what the default values have changed.
If you have any comments, please ask MariaDB and MySQL to integrate a standard my.ini file in each new version.
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Documentation Apache -
Documentation PHP -
Documentation MySQL -
Wampserver install files & addons