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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<title>Upgrading from 1.5.3 to 1.5.4 : CodeIgniter User Guide</title>
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<td><h1>CodeIgniter User Guide Version 2.1.4</h1></td>
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<a href="http://codeigniter.com/">CodeIgniter Home</a> ›
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Upgrading from 1.5.3 to 1.5.4
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<h1>Upgrading from 1.5.3 to 1.5.4</h1>
<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 CodeIgniter files</h2>
<p>Replace these files and directories in your "system" folder with the new versions:</p>
<ul>
<li><dfn>application/config/mimes.php</dfn></li>
<li><dfn>system/codeigniter</dfn></li>
<li><dfn>system/database</dfn></li>
<li><dfn>system/helpers</dfn></li>
<li><dfn>system/libraries</dfn></li>
<li><dfn>system/plugins</dfn></li>
</ul>
<p class="important"><strong>Note:</strong> If you have any custom developed files in these folders please make copies of them first.</p>
<h2>Step 2: Add charset to your config.php </h2>
<p>Add the following to application/config/config.php</p>
<code>/*<br />
|--------------------------------------------------------------------------<br />
| Default Character Set<br />
|--------------------------------------------------------------------------<br />
|<br />
| This determines which character set is used by default in various methods<br />
| that require a character set to be provided.<br />
|<br />
*/<br />
$config['charset'] = "UTF-8";</code>
<h2>Step 3: Autoloading language files </h2>
<p>If you want to autoload any language files, add this line to application/config/autoload.php</p>
<code>$autoload['language'] = array();</code>
<h2>Step 4: Update your user guide</h2>
<p>Please also replace your local copy of the user guide with the new version.</p>
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