XDebug changed some configuration settings.
Old settings:
xdebug.remote_enable = 1
xdebug.remote_autostart = 1
xdebug.remote_port = 9000
New settings:
xdebug.mode=debug
xdebug.start_with_request=yes
xdebug.client_port=9000
So you should paste the latter in php.ini file. More info: XDebug Changed Configuration Settings