PHP XDebug #fail
"Don’t forget to include the full path to the xdebug extension. Do not use the extension_dir option in the php.ini as this does not seem to work. I learned this the hard way when I could not get the extension to load and saw these error messages appearing in the Apache2 log: Failed loading xdebug.so: (null)"
(via: http://www.burobjorn.nl/blog/2007/03/09/howto-install-xdebug/)
