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| 24 | <meta name='author' content='Rick Ellis' />
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| 33 | <div id="masthead">
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| 34 | <table cellpadding="0" cellspacing="0" border="0" style="width:100%">
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| 35 | <tr>
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| 36 | <td><h1>Code Igniter User Guide Version 1.4.0</h1></td>
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| 37 | <td id="breadcrumb_right"><a href="../toc.html">Full Table of Contents</a></td>
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| 48 | <a href="http://www.codeigniter.com/">Code Igniter Home</a> ›
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| 49 | <a href="../index.html">User Guide Home</a> ›
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| 50 | Replacing System Classes
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| 61 | <div id="content">
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| 62 |
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| 63 | <h1>Replacing System Classes</h1>
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| 64 |
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| 65 | <p>Every time Code Igniter runs there are several base classes that are initialized automatically as part of the core framework.
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| 66 | It is possible, however, to swap any of the core system files with your own versions. Most users will never have any need to do this,
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| 67 | but the option to replace them does exist for those that would like to significantly alter the Code Igniter core.
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| 68 | </p>
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| 69 |
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| 70 | <p class="important"><strong>Note:</strong> Replacing a core system class with your own version has a lot of implications, so make sure you
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| 71 | know what you are doing before attempting it.</p>
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| 72 |
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| 73 |
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| 74 | <h2>System Class List</h2>
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| 75 |
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| 76 | <p>The following is a list of the core system files that are invoked every time Code Igniter runs:</p>
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| 77 |
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| 78 | <ul>
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| 79 | <li>Benchmark</li>
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| 80 | <li>Input</li>
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| 81 | <li>Config</li>
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| 82 | <li>Hooks</li>
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| 83 | <li>Router</li>
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| 84 | <li>URI</li>
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| 85 | <li>Language</li>
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| 86 | <li>Loader</li>
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| 87 | <li>Controller</li>
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| 88 | <li>Output</li>
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| 89 | </ul>
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| 90 |
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| 91 | <h2>Replacing Core Classes</h2>
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| 92 |
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| 93 | <p>To use one of your own system classes instead of a default one simply place your version inside your local <dfn>libraries</dfn> directory:</p>
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| 94 |
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| 95 | <code>application/libraries/<dfn>some-class.php</dfn></code>
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| 96 |
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| 97 | <p>Any file named identically to one from the list above will be used instead of the one normally used.</p>
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| 98 |
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| 99 | <p>Please note that your class must use <kbd>CI</kbd> as a prefix. For example, if your file is named <kbd>Input.php</kbd> the class will be named:</p>
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| 100 |
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| 101 | <code>
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| 102 | class CI_Input {<br /><br />
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| 103 |
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| 104 | }
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| 105 | </code>
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| 106 |
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| 107 |
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| 109 |
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| 110 |
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| 111 | </div>
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| 112 | <!-- END CONTENT -->
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| 113 |
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| 114 |
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| 115 | <div id="footer">
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| 116 | <p>
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| 117 | Previous Topic: <a href="hooks.html">Hooks</a>
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| 118 | ·
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| 119 | <a href="#top">Top of Page</a> ·
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| 120 | <a href="../index.html">User Guide Home</a> ·
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| 121 | Next Topic: <a href="scaffolding.html">Scaffolding</a>
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| 122 | <p>
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| 123 | <p><a href="http://www.codeigniter.com">Code Igniter</a> · Copyright © 2006 · <a href="http://www.pmachine.com">pMachine, Inc.</a></p>
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