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File Helper
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<h1>File Helper</h1>

<p>The File Helper file contains functions that assist in working with files.</p>


<h2>Loading this Helper</h2>

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

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

<h2>read_file('<var>path</var>')</h2>

<p>Returns the data contained in the file specified in the path.  Example:</p>

<code>$string = read_file('./path/to/file.php');</code>

<p>The path can be a relative or full server path.  Returns FALSE (boolean) on failure.</p>

<p class="important"><strong>Note:</strong> The path is relative to your main site index.php file, NOT your controller or view files.
Code Igniter uses a front controller so paths are always relative to the main site index.</p>

<p>If you server is running an open_basedir restriction this function
might not work if you are trying to access a file above the calling script.</p>

<h2>write_file('<var>path</var>', <kbd>$data</kbd>)</h2>

<p>Writes data to the file specified in the path.  If the file does not exist the function will create it. Example:</p>

<code>
$data = 'Some file data';<br />
<br />
if ( ! write_file('./path/to/file.php', $data))<br />
{<br />
&nbsp;&nbsp;&nbsp;&nbsp; echo 'Unable to write the file';<br />
}<br />
else<br />
{<br />
&nbsp;&nbsp;&nbsp;&nbsp; echo 'File written!';<br />
}</code>

<p>Note: In order for this function to write data to a file its file permissions must be set such that it is writable (666, 777, etc.).
If the file does not already exist, the directory containing it must be writable.</p>

<p class="important"><strong>Note:</strong> The path is relative to your main site index.php file, NOT your controller or view files.
Code Igniter uses a front controller so paths are always relative to the main site index.</p>



<h2>delete_files('<var>path</var>')</h2>

<p>Deletes ALL files contained in the supplied path.  Example:</p>
<code>delete_files('/path/to/directory/');</code>

<p>If the second parameter is set to <kbd>true</kbd>, any directories contained within the supplied root path will be deleted as well. Example:</p>

<code>delete_files('/path/to/directory/', TRUE);</code>

<p class="important"><strong>Note:</strong> The files must be writable or owned by the system in order to be deleted.</p>




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