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+<title>Code Igniter User Guide</title>

+

+<style type='text/css' media='all'>@import url('../userguide.css');</style>

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+<meta name='author' content='Rick Ellis' />

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+<!-- START NAVIGATION -->

+<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>

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+<div id="masthead">

+<table cellpadding="0" cellspacing="0" border="0" style="width:100%">

+<tr>

+<td><h1>Code Igniter User Guide Version 1.4.1</h1></td>

+<td id="breadcrumb_right"><a href="../toc.html">Full Table of Contents</a></td>

+</tr>

+</table>

+</div>

+<!-- END NAVIGATION -->

+

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+<!-- START BREADCRUMB -->

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+<tr>

+<td id="breadcrumb">

+<a href="http://www.codeigniter.com/">Code Igniter Home</a> &nbsp;&#8250;&nbsp;

+<a href="../index.html">User Guide Home</a> &nbsp;&#8250;&nbsp;

+Upgrading from 1.3.3 to 1.4.0

+</td>

+<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="www.codeigniter.com/user_guide/" />Search User Guide&nbsp; <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" />&nbsp;<input type="submit" class="submit" name="sa" value="Go" /></form></td>

+</tr>

+</table>

+<!-- END BREADCRUMB -->

+

+<br clear="all" />

+

+

+<!-- START CONTENT -->

+<div id="content">

+

+<h1>Upgrading from 1.4.0 to 1.4.1</h1>

+

+<p class="important"><strong>Note:</strong> The instructions on this page assume you are running version 1.4.0.  If you 

+have not upgraded to that version please do so first.</p>

+

+<p>Before performing an update you should take your site offline by replacing the index.php file with a static one.</p>

+

+

+

+<h2>Step 1: Update your Code Igniter files</h2>

+

+<p>Replace the following directories in your "system" folder with the new versions:</p>

+

+<p class="important"><strong>Note:</strong> If you have any custom developed files in these folders please make copies of them first.</p>

+

+<ul>

+<li>codeigniter</li>

+<li>drivers</li>

+<li>helpers</li>

+<li>libraries</li>

+</ul>

+

+

+<h2>Step 2: Update your config.php file</h2>

+

+<p>Open your <dfn>application/config/config.php</dfn> file and add this new item:</p>

+

+<pre>

+

+/*

+|--------------------------------------------------------------------------

+| Output Compression

+|--------------------------------------------------------------------------

+|

+| Enables Gzip output compression for faster page loads.  When enabled,

+| the output class will test whether your server supports Gzip. 

+| Even if it does, however, not all browsers support compression

+| so enable only if you are reasonably sure your visitors can handle it.

+|

+| VERY IMPORTANT:  If you are getting a blank page when compression is enabled it

+| means you are prematurely outputting something to your browser. It could

+| even be a line of whitespace at the end of one of your scripts.  For 

+| compression to work, nothing can be sent before the output buffer is called

+| by the output class.  Do not "echo" any values with compression enabled.

+|

+*/

+$config['compress_output'] = FALSE;

+

+</pre>

+

+

+

+<h2>Step 3: Rename an Autoload Item</h2>

+

+<p>Open the following file: <dfn>application/config/autoload.php</dfn></p>

+

+<p>Find this array item:</p>

+

+<code>$autoload['core'] = array();</code>

+

+<p>And rename it to this:</p>

+

+<code>$autoload['libraries'] = array();</code>

+

+<p>This change was made to improve clarity since some users were not sure that their own libraries could be auto-loaded.</p>

+

+

+

+

+

+

+<h2>Step 4: Update your user guide</h2>

+

+<p>Please also replace your local copy of the user guide with the new version.</p>

+

+</div>

+<!-- END CONTENT -->

+

+

+<div id="footer">

+<p>

+Previous Topic:&nbsp;&nbsp;<a href="index.html">Installation Instructions</a>

+&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;

+<a href="#top">Top of Page</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;

+<a href="../index.html">User Guide Home</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;

+Next Topic:&nbsp;&nbsp;<a href="../overview/at_a_glance.html">Code Igniter at a Glance</a>

+<p>

+

+<p><a href="http://www.codeigniter.com">Code Igniter</a> &nbsp;&middot;&nbsp; Copyright &#169; 2006 &nbsp;&middot;&nbsp; <a href="http://www.pmachine.com">pMachine, Inc.</a></p>

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+

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