Hi,
I remind you that this is only a warning to warn those who would like to change PHP version regardless of the fact that the PATH will always point to the previous version and that the new version of PHP will take into account the php.ini of the old version.
This warning does not block or change anything about Wampserver.
When you have spent four days to find out why PHP 5.6.32 did not take into account the changes in its own php.ini, you will understand why this warning exists.
And, in addition, the Wamp settings allow you to no longer have this warning, but at your own risk.
---------------------------------------------------------------
Documentation Apache -
Documentation PHP -
Documentation MySQL -
Wampserver install files & addons