Update:
Yesterday, I downloaded an excellent PHP Editor called :
DzSoft PHP EditorThis editor even clears out the empty spaces between each lines (and keeps the paragraphs structures as it is - of course.
).
This will prevent users to have this REALLY KNOWN PHRASE ISSUE :
Headers already been sent.
2nd - It shrinks the kb on the files about 1.2k each.
Just my two cent.