131 lines
6.3 KiB
HTML
131 lines
6.3 KiB
HTML
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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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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>Upgrading from 1.7.2 to 2.0.0 : CodeIgniter User Guide</title>
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<style type='text/css' media='all'>@import url('../userguide.css');</style>
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<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' />
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<script type="text/javascript" src="../nav/nav.js"></script>
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<script type="text/javascript" src="../nav/prototype.lite.js"></script>
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<script type="text/javascript" src="../nav/moo.fx.js"></script>
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<script type="text/javascript" src="../nav/user_guide_menu.js"></script>
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<meta http-equiv='expires' content='-1' />
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<meta http-equiv= 'pragma' content='no-cache' />
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<meta name='robots' content='all' />
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<meta name='author' content='ExpressionEngine Dev Team' />
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<meta name='description' content='CodeIgniter User Guide' />
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</head>
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<body>
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<!-- START NAVIGATION -->
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<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
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<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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<div id="masthead">
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<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
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<tr>
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<td><h1>CodeIgniter User Guide Version 2.1.4</h1></td>
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<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
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</tr>
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</table>
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</div>
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<!-- END NAVIGATION -->
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<!-- START BREADCRUMB -->
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<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
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<tr>
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<td id="breadcrumb">
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<a href="http://codeigniter.com/">CodeIgniter Home</a> ›
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<a href="../index.html">User Guide Home</a> ›
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Upgrading from 1.7.2 to 2.0.0
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</td>
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<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="ellislab.com/codeigniter/user-guide/" />Search User Guide <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" /> <input type="submit" class="submit" name="sa" value="Go" /></form></td>
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</tr>
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</table>
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<!-- END BREADCRUMB -->
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<br clear="all" />
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<!-- START CONTENT -->
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<div id="content">
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<h1>Upgrading from 1.7.2 to 2.0.0</h1>
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<p>Before performing an update you should take your site offline by replacing the index.php file with a static one.</p>
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<h2>Step 1: Update your CodeIgniter files</h2>
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<p>Replace all files and directories in your "system" folder <strong>except</strong> your <kbd>application</kbd> folder.</p>
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<p class="important"><strong>Note:</strong> If you have any custom developed files in these folders please make copies of them first.</p>
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<h2>Step 2: Adjust get_dir_file_info() where necessary</h2>
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<p>Version 2.0.0 brings a non-backwards compatible change to <kbd>get_dir_file_info()</kbd> in the <a href="../helpers/file_helper.html">File Helper</a>. Non-backwards compatible changes are extremely rare
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in CodeIgniter, but this one we feel was warranted due to how easy it was to create serious server performance issues. If you <em>need</em>
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recursiveness where you are using this helper function, change such instances, setting the second parameter, <kbd>$top_level_only</kbd> to FALSE:</p>
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<code>get_dir_file_info('/path/to/directory', <kbd>FALSE</kbd>);</code>
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</p>
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<h2>Step 3: Convert your Plugins to Helpers</h2>
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<p>2.0.0 gets rid of the "Plugin" system as their functionality was identical to Helpers, but non-extensible. You will need to rename your plugin files from <var>filename_pi.php</var> to <var>filename_helper.php</var>, move them to your <kbd>helpers</kbd> folder, and change all instances of:
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<code>$this->load->plugin('foo');</code>
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to
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<code>$this->load->helper('foo');</code>
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</p>
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<h2>Step 4: Update stored encrypted data</h2>
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<p class="important"><strong>Note:</strong> If your application does not use the Encryption library, does not store Encrypted data permanently, or is on an environment that does not support Mcrypt, you may skip this step.</p>
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<p>The Encryption library has had a number of improvements, some for encryption strength and some for performance, that has an unavoidable consequence of
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making it no longer possible to decode encrypted data produced by the original version of this library. To help with the transition, a new method has
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been added, <kbd>encode_from_legacy()</kbd> that will decode the data with the original algorithm and return a re-encoded string using the improved methods.
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This will enable you to easily replace stale encrypted data with fresh in your applications, either on the fly or en masse.</p>
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<p>Please read <a href="../libraries/encryption.html#legacy">how to use this method</a> in the Encryption library documentation.</p>
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<h2>Step 5: Remove loading calls for the compatibility helper.</h2>
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<p>The compatibility helper has been removed from the CodeIgniter core. All methods in it should be natively available in supported PHP versions.</p>
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<h2>Step 6: Update Class extension</h2>
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<p>All core classes are now prefixed with <kbd>CI_</kbd>. Update Models and Controllers to extend CI_Model and CI_Controller, respectively.</p>
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<h2>Step 7: Update Parent Constructor calls</h2>
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<p>All native CodeIgniter classes now use the PHP 5 <kbd>__construct()</kbd> convention. Please update extended libraries to call <kbd>parent::__construct()</kbd>.</p>
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<h2>Step 8: Update your user guide</h2>
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<p>Please replace your local copy of the user guide with the new version, including the image files.</p>
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</div>
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<!-- END CONTENT -->
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<div id="footer">
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<p>
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Previous Topic: <a href="index.html">Installation Instructions</a>
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·
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<a href="#top">Top of Page</a> ·
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<a href="../index.html">User Guide Home</a> ·
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Next Topic: <a href="troubleshooting.html">Troubleshooting</a>
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</p>
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<p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006 - 2012 · <a href="http://ellislab.com/">EllisLab, Inc.</a></p>
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</div>
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</body>
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</html>
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