Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
| 1 | <?php |
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| 2 | class GateController extends LoginController |
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| 3 | { |
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| 4 | public function actionIndex() |
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| 26 | public function actionCookie() |
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| 31 | public function actionLogout() |
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| 37 | public function actionForum() |
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| 43 | public function actionBank() |
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| 49 | View Code Duplication | protected function beforeAction($action) |
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| 57 | } |
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Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: