using single quotes is faster because PHP will not bother looking for a variable to parse..
see the example:
the dot is to chain whats before it and after it together !
it's like the + in JavaScript !
example:
sometimes you want to have a fixed dir name but the file name is a variable provided via a form to include files from the dir 'articles' so this how it can be done:
altho these lines are almost useless but it helps in explaning..
hope that was clear
