I have been using eclipse-pdt in conjunction with xdebug and apache without problems, for over one year. Things worked flawlessly and I could do all the interactive debuggin
What Beau said is correct (couldn't vote since I'm new!).
Generally, addging to /etc/php5/cgi/php.ini (or locate php.ini) the lines like
zend_extension = /PATH_TO/xdebug.so ## <-- NOTE the absolute path, not relational (For ex on Windows: "C:\nginx-1.9.13\php\ext\php_xdebug-2.6.0RC2-7.0-vc14-nts.dll")
xdebug.remote_enable = on
xdebug.remote_handler = dbgp
xdebug.remote_host = localhost
xdebug.remote_port = 9900 ## <-- Yours will be probly 9000 or other..
does the job.
So after the change,
./php-fastcgi stop
./php-fastcgi start
This worked for me.