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###########
Path Helper
###########
The Path Helper file contains functions that permits you to work with
file paths on the server.
.. contents:: Page Contents
Loading this Helper
===================
This helper is loaded using the following code
::
$this->load->helper('path');
The following functions are available:
set_realpath()
==============
Checks to see if the path exists. This function will return a server
path without symbolic links or relative directory structures. An
optional second argument will cause an error to be triggered if the path
cannot be resolved.
::
$file = '/etc/php5/apache2/php.ini';
echo set_realpath($file); // returns "/etc/php5/apache2/php.ini"
$non_existent_file = '/path/to/non-exist-file.txt';
echo set_realpath($non_existent_file, TRUE); // returns an error, as the path could not be resolved
echo set_realpath($non_existent_file, FALSE); // returns "/path/to/non-exist-file.txt"
$directory = '/etc/passwd';
echo set_realpath($directory); // returns "/etc/passwd/"
$non_existent_directory = '/path/to/nowhere';
echo set_realpath($non_existent_directory, TRUE); // returns an error, as the path could not be resolved
echo set_realpath($non_existent_directory, FALSE); // returns "/path/to/nowhere"
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