Hi,
> The update messed up all my php setting. Is this normal?
Each version of PHP has its own settings.
The settings evolve, change, can even be removed or added from one PHP version to another, so it is totally impossible to keep YOUR settings when you switch from one PHP version to another, especially since you can very well switch from PHP 5.6.40 to PHP 8.0.11 and there is a world between the settings of these two versions.
The same goes for switching between versions of Apache, MySQL or MariaDB.
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Documentation Apache -
Documentation PHP -
Documentation MySQL -
Wampserver install files & addons