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31 <td><h1>CodeIgniter User Guide Version 2.0.2</h1></td>
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45 Upgrading from 1.4.0 to 1.4.1 </td>
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57 <h1>Upgrading from 1.4.0 to 1.4.1</h1>
59 <p class="important"><strong>Note:</strong> The instructions on this page assume you are running version 1.4.0. If you
60 have not upgraded to that version please do so first.</p>
62 <p>Before performing an update you should take your site offline by replacing the index.php file with a static one.</p>
66 <h2>Step 1: Update your CodeIgniter files</h2>
68 <p>Replace the following directories in your "system" folder with the new versions:</p>
70 <p class="important"><strong>Note:</strong> If you have any custom developed files in these folders please make copies of them first.</p>
80 <h2>Step 2: Update your config.php file</h2>
82 <p>Open your <dfn>application/config/config.php</dfn> file and add this new item:</p>
87 |--------------------------------------------------------------------------
89 |--------------------------------------------------------------------------
91 | Enables Gzip output compression for faster page loads. When enabled,
92 | the output class will test whether your server supports Gzip.
93 | Even if it does, however, not all browsers support compression
94 | so enable only if you are reasonably sure your visitors can handle it.
96 | VERY IMPORTANT: If you are getting a blank page when compression is enabled it
97 | means you are prematurely outputting something to your browser. It could
98 | even be a line of whitespace at the end of one of your scripts. For
99 | compression to work, nothing can be sent before the output buffer is called
100 | by the output class. Do not "echo" any values with compression enabled.
103 $config['compress_output'] = FALSE;
109 <h2>Step 3: Rename an Autoload Item</h2>
111 <p>Open the following file: <dfn>application/config/autoload.php</dfn></p>
113 <p>Find this array item:</p>
115 <code>$autoload['core'] = array();</code>
117 <p>And rename it to this:</p>
119 <code>$autoload['libraries'] = array();</code>
121 <p>This change was made to improve clarity since some users were not sure that their own libraries could be auto-loaded.</p>
128 <h2>Step 4: Update your user guide</h2>
130 <p>Please also replace your local copy of the user guide with the new version.</p>
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