Question

I can’t quite figure out the meaning of this statement:

set_include_path('.'
. PATH_SEPARATOR . '../library/'
. PATH_SEPARATOR . '../application'
. PATH_SEPARATOR . get_include_path());

A quick breakdown would be appreciated.

Answer 1

It adds the two paths to the include_path so that if you
include a file “../library/filename.php”.
you can do it by

include('filename.php');

instead of

include('../library/filename.php');

I suppose this is a part of some framework

It basically adds the folder to the php include path