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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| 9 | class PageController implements \Anax\DI\IInjectionAware  | 
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| 10 | {
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| 11 | use \Anax\DI\TInjectable,  | 
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| 12 | \Anax\MVC\TRedirectHelpers;  | 
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| 13 | |||
| 14 | public $page;  | 
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| 15 | |||
| 16 | /**  | 
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| 17 | * Initialize the controller.  | 
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| 18 | *  | 
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| 19 | * @return void  | 
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| 20 | */  | 
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| 21 | public function initialize()  | 
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| 26 | |||
| 27 | public function setupAction()  | 
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| 33 | |||
| 34 | public function indexAction()  | 
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| 38 | |||
| 39 | |||
| 40 | /**  | 
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| 41 | * List all pages.  | 
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| 42 | *  | 
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| 43 | * @return void  | 
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| 44 | */  | 
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| 45 | View Code Duplication | public function listAction()  | 
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| 55 | |||
| 56 | /**  | 
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| 57 | * Views page with with slug.  | 
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| 58 | *  | 
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| 59 | * @param int $slug of page to display  | 
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| 60 | *  | 
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| 61 | * @return void  | 
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| 62 | */  | 
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| 63 | View Code Duplication | public function viewAction($slug = null)  | 
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| 78 | |||
| 79 | /**  | 
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| 80 | * Add new page.  | 
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| 81 | *  | 
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| 82 | *  | 
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| 83 | * @return void  | 
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| 84 | */  | 
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| 85 | View Code Duplication | public function addAction()  | 
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| 100 | |||
| 101 | /**  | 
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| 102 | * Edit a page.  | 
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| 103 | *  | 
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| 104 | * @param string $id of page to edit.  | 
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| 105 | *  | 
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| 106 | * @return void  | 
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| 107 | */  | 
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| 108 | View Code Duplication | public function updateAction($id = null)  | 
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| 129 | |||
| 130 | /**  | 
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| 131 | * Delete page.  | 
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| 132 | *  | 
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| 133 | * @param integer $id of page to delete.  | 
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| 134 | *  | 
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| 135 | * @return void  | 
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| 136 | */  | 
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| 137 | public function deleteAction($id = null)  | 
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| 147 | |||
| 148 | /**  | 
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| 149 | * Delete (soft) page.  | 
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| 150 | *  | 
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| 151 | * @param integer $id of page to delete.  | 
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| 152 | *  | 
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| 153 | * @return void  | 
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| 154 | */  | 
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| 155 | View Code Duplication | public function softDeleteAction($id = null)  | 
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| 170 | |||
| 171 | /**  | 
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| 172 | * Restore (soft) deleted page.  | 
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| 173 | *  | 
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| 174 | * @param integer $id of page to restore.  | 
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| 175 | *  | 
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| 176 | * @return void  | 
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| 177 | */  | 
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| 178 | View Code Duplication | public function restoreAction($id = null)  | 
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| 191 | |||
| 192 | /**  | 
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| 193 | * Activate page.  | 
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| 194 | *  | 
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| 195 | * @param integer $id of page to activate.  | 
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| 196 | *  | 
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| 197 | * @return void  | 
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| 198 | */  | 
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| 199 | public function activateAction($id = null)  | 
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| 212 | |||
| 213 | /**  | 
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| 214 | * Inactivate page.  | 
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| 215 | *  | 
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| 216 | * @param integer $id of page to inactivate.  | 
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| 217 | *  | 
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| 218 | * @return void  | 
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| 219 | */  | 
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| 220 | View Code Duplication | public function inactivateAction($id = null)  | 
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| 235 | |||
| 236 | /**  | 
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| 237 | * List all active and not deleted pages.  | 
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| 238 | *  | 
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| 239 | * @return void  | 
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| 240 | */  | 
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| 241 | View Code Duplication | public function activeAction()  | 
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| 254 | |||
| 255 | /**  | 
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| 256 | * List all inactive pages.  | 
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| 257 | *  | 
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| 258 | * @return void  | 
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| 259 | */  | 
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| 260 | View Code Duplication | public function inactiveAction()  | 
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| 272 | |||
| 273 | /**  | 
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| 274 | * List all deleted pages.  | 
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| 275 | *  | 
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| 276 | * @return void  | 
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| 277 | */  | 
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| 278 | View Code Duplication | public function trashAction()  | 
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| 290 | |||
| 291 | }  | 
            
If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check:
If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue.