user_guide/helpers/path_helper.html


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<h1>Path Helper</h1>

<p>The Path Helper file contains functions that permits you to work with file paths on the server.</p>


<h2>Loading this Helper</h2>

<p>This helper is loaded using the following code:</p>
<code>$this->load->helper('path');</code>

<p>The following functions are available:</p>


<h2>set_realpath()</h2>

<p>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.</p>

<code>$directory = '/etc/passwd';<br />
echo set_realpath($directory);<br />
// returns &quot;/etc/passwd&quot;<br />
<br />
$non_existent_directory = '/path/to/nowhere';<br />
echo set_realpath($non_existent_directory, TRUE);<br />
// returns an <strong>error</strong>, as the path could not be resolved
<br /><br />
echo set_realpath($non_existent_directory, FALSE);<br />
// returns &quot;/path/to/nowhere&quot;


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