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<title>Upgrading from 1.5.4 to 1.6.0 : CodeIgniter User Guide</title>
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<td><h1>CodeIgniter User Guide Version 2.0.0</h1></td>
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Upgrading from 1.5.4 to 1.6.0
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<h1>Upgrading from 1.5.4 to 1.6.0</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>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>
<li><dfn>system/language</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 time_to_update to your config.php </h2>
<p>Add the following to application/config/config.php with the other session configuration options</p>
<p><code>$config['sess_time_to_update'] = 300;</code></p>
<h2>Step 3: Add $autoload['model']</h2>
<p>Add the following to application/config/autoload.php</p>
<p><code> /*<br />
| -------------------------------------------------------------------<br />
| Auto-load Model files<br />
| -------------------------------------------------------------------<br />
| Prototype:<br />
|<br />
| $autoload['model'] = array('my_model');<br />
|<br />
*/<br />
<br />
$autoload['model'] = array();</code></p>
<h2>Step 4: Add to your database.php </h2>
<p>Make the following changes to your application/config/database.php file:</p>
<p>Add the following variable above the database configuration options, with <dfn>$active_group</dfn></p>
<p><code>$active_record = TRUE;</code></p>
<p>Remove the following from your database configuration options</p>
<p><code>$db['default']['active_r'] = TRUE;</code></p>
<p>Add the following to your database configuration options</p>
<p><code>$db['default']['char_set'] = "utf8";<br />
$db['default']['dbcollat'] = "utf8_general_ci";</code></p>
<h2>Step 5: 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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