Pathname of current directory - Справочник: PHP5.4

string posix_getcwd ( void )

Gets the absolute pathname of the script's current working directory. On error, it sets errno which can be checked using posix_get_last_error()

Returns a string of the absolute pathname on success. On error, returns FALSE and sets errno which can be checked with posix_get_last_error().

Пример #1 posix_getcwd() example

This example will return the absolute path of the current working directory of the script.


<?php
echo 'My current working directory is '.posix_getcwd();
?>

Замечание:
This function can fail on

Read or Search permission was denied

Pathname no longer exists