How to get absolute path on a web server using PHP ?

We can find absolute path in different ways on a web server using php, i am showing some of that practices here

01

<?php

02	echo realpath(dirname(__FILE__));

03	// realpath() , This function removes all symbolic path and returns the absolute path name , this function return >false an failer

04	//dirname() , Returns the parent directory path

05	// __FILE__ ,The full path and file name of the file

06

?>

07

<?php

08	echo getcwd();

09	//getcwd(), function get the current working directory , returns true on success return >false on failure

10

?>

11

<?php

12	print_r($_SERVER['DOCUMENT_ROOT']);

13	//$_SERVER is an array with headers,path,script location information.

14	//$_SERVER['DOCUMENT_ROOT'] , returns the current  executing script directory

15

?>

16

<?php

17	// absolute path with file name

18	echo $_SERVER['SCRIPT_FILENAME'];

19

?>

The description of the functions used in this tutorial are as follows
realpath() , This function removes all symbolic path and returns the absolute path name , this function return false an failure
dirname() , Returns the parent directory path
getcwd(), function get the current working directory , returns true on success return flase on failure
$_SERVER is an array with headers,path,script location information.