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| <td><h1>Code Igniter User Guide Version 1.4.0</h1></td> | |
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| Replacing System Classes | |
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| <h1>Replacing System Classes</h1> | |
| <p>Every time Code Igniter runs there are several base classes that are initialized automatically as part of the core framework. | |
| 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, | |
| but the option to replace them does exist for those that would like to significantly alter the Code Igniter core. | |
| </p> | |
| <p class="important"><strong>Note:</strong> Replacing a core system class with your own version has a lot of implications, so make sure you | |
| know what you are doing before attempting it.</p> | |
| <h2>System Class List</h2> | |
| <p>The following is a list of the core system files that are invoked every time Code Igniter runs:</p> | |
| <ul> | |
| <li>Benchmark</li> | |
| <li>Input</li> | |
| <li>Config</li> | |
| <li>Hooks</li> | |
| <li>Router</li> | |
| <li>URI</li> | |
| <li>Language</li> | |
| <li>Loader</li> | |
| <li>Controller</li> | |
| <li>Output</li> | |
| </ul> | |
| <h2>Replacing Core Classes</h2> | |
| <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> | |
| <code>application/libraries/<dfn>some-class.php</dfn></code> | |
| <p>Any file named identically to one from the list above will be used instead of the one normally used.</p> | |
| <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> | |
| <code> | |
| class CI_Input {<br /><br /> | |
| } | |
| </code> | |
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