Im trying to configure xdebug to work with Netbeans 6.9 and php 5.3
As far as i concern i have setup xdebug properly.
I can see xdebug extension from phpinfo page.
Having just upgraded to the new Ubuntu 14.4 my NetBeans Xdebug stopped working. I've followed all the answers above to date to no avail.
I found a NetBeans Ubuntu statement that the /etc/php5/cli/conf.d/xdebug.ini file should have xdebug.remote_enable=on. When I checked the /etc/php5/cli/conf.d directory, I found no xdebug.ini file. However there was a link to /etc/php5/mods-available/xdebug.ini there. Subsequent adding the xdebug.remote_enable=on to that file fixed the problem.
PS - This works on NetBeans 8.0.1