include "con.php" would find the con.php file in the current folder.
include "../con.php" would find it in the folder above.
What is the syntax to find it in the folder 2 above?
and lastly, what is the syntax to find it in the folder which is in the same "above one" folder? (like if i have a folder MAIN, with foldersONE and TWO in it. con.php is in TWO and the file to be run is in ONE)?
Thanks!
../../con.php
This would get you 2 levels up.
../TWO/con.php
Would take you one level up, and then down into TWO where con.php is.
It's ../ for each folder, so ../../ for two folder.
Whilst not entirely on-topic, I'd recommend creating a define for your "base" HTML directory and accessing all includes, images, etc. relative to that. (If you have a specific "includes" directory, you could of course create a specific define for that as well.)
For example:
define('__BASEPATH', str_replace('//', '/', $_SERVER['DOCUMENT_ROOT'].'/'), true);
include __BASEPATH.'includes/con.php';
