base_path()
Returns the base URL path (i.e., directory) of the Drupal installation.
base_path() adds a "/" to the beginning and end of the returned path if the path is not empty. At the very least, this will return "/".
Examples:
http://example.com returns "/" because the path is empty.
http://example.com/drupal/folder returns "/drupal/folder/".
File
core/includes/common.inc, line 413 Common functions that many Drupal modules will need to reference.
Code
function base_path() {
return $G