In the "mode FCGI help" it is written:
This same page [
localhost] also allows, via the Alias modification form, to add the FCGI mode to an Alias, to change the PHP version or to remove the FCGI mode...
It's as easy as six clicks!
Left-click -> Your VirtualHosts -> VirtualHost management
or
Left-click -> Localhost -> Add a VirtualHost
-> Modify Alias form
-> Check Phpmyadmin
-> Modify alias
-> Check If you want to use PHP in FCGI mode
-> Choose PHP version
-> Start the modification of the alias
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Wampserver install files & addons