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<td><h1>Code Igniter User Guide Version 1.5.0b3</h1></td>
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<a href="http://www.codeigniter.com/">Code Igniter Home</a> ›
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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 />
echo 'Unable to write the file';<br />
}<br />
else<br />
{<br />
echo 'File written!';<br />
}</code>
<p>You can optionally set the write mode via the third parameter:
<code>write_file('./path/to/file.php', $data, <var>'r+'</var>);</code>
<p>The default mode is <kbd>wb</kbd>. Please see the <a href="http://php.net/fopen">PHP user guide</a> for mode options.</p>
<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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