I don't understand, I downloaded this file in the morning - wampserver3.1.0_x64
Installed wamp, switched to php 7.1.9 and php_xdebug didn't work.
I checked different php versions folders, all files were in places, with right names and pathes but it didn't work.
The problem is when you switch php version through tray icon wamp it doesn't change the PATH in PHP.ini automatically, it keeps 7.0 in the path to the extension and unless you change it manualy in php.ini to 7.1 it doesn't work.
That's my point