PHP
(quick guide & example)
ABSOLUTE - FULL PATH include "D:\\HTTP\\LIB\\SCRIPT.PHP";
RELATIVE - BASED ON CURRENT WORKING DIRECTORY (CWD) include "LIB\\SCRIPT.PHP";
IF WE RUN HTTP://SITE.COM/DEMO.PHP, RELATIVE PATH IS BASED ON CWD. CWD = D:\HTTP\ REQUIRE = D:\HTTP\LIB\SCRIPT.PHP
THIS SCRIPT IS AT D:\HTTP\DEMO.PHP echo getcwd(); require "LIB\\SCRIPT.PHP"
SCRIPT 1 - D:\HTTP\A.PHP include "lib/B.PHP"; SCRIPT 2 - D:\HTTP\LIB\B.PHP echo getcwd();
CWD IS FIXED TO THE FIRST SCRIPT. URL = HTTP://SITE.COM/A.PHP CWD = D:\HTTP\ URL = HTTP://SITE.COM/LIB/B.PHP CWD = D:\HTTP\LIB\
SCRIPT 1 - D:\HTTP\A.PHP include "lib/B.PHP"; SCRIPT 2 - D:\HTTP\LIB\B.PHP echo __DIR__; echo __FILE__;
CONSTANTS FIXED TO THE SCRIPT URL = HTTP://SITE.COM/A.PHP CWD = D:\HTTP\ __DIR__ = D:\HTTP\LIB\ __FILE__ = D:\HTTP\LIB\B.PHP URL = HTTP://SITE.COM/LIB/B.PHP CWD = D:\HTTP\LIB\ __DIR__ = D:\HTTP\LIB\ __FILE__ = D:\HTTP\LIB\B.PHP