In Eclipse, there is something called refresh workspace or F5 that refreshes the files, to make sure to pick-up any files that are changed outside eclipse.
How do i do t
Within NetBeans:
NetBeans
select "Source" > "Scan for External Changes"
this will force the IDE to look for changes and "Refresh" the file structure.
IDE
I develop PHP within NetBeans and am frequently creating new files outside of the IDE. This does the trick every time and works quickly.
PHP