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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| 11 | class RouteListController extends Controller |
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| 12 | { |
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| 13 | /** |
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| 14 | * Router. |
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| 15 | * |
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| 16 | * @var \Illuminate\Routing\Router |
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| 17 | */ |
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| 18 | protected $router; |
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| 19 | |||
| 20 | /** |
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| 21 | * Create a controller instance. |
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| 22 | * |
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| 23 | * @param string $id |
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| 24 | * @param Router $router |
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| 25 | * |
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| 26 | * @return void |
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| 27 | */ |
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| 28 | public function __construct(Router $router) |
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| 32 | |||
| 33 | /** |
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| 34 | * Render routes. |
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| 35 | * |
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| 36 | * @return \Illuminate\Http\Response |
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| 37 | */ |
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| 38 | public function __invoke() |
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| 64 | |||
| 65 | /** |
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| 66 | * Get route middleware. |
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| 67 | * |
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| 68 | * @param \Illuminate\Routing\Route $route |
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| 69 | * |
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| 70 | * @return string |
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| 71 | */ |
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| 72 | protected function getRouteMiddleware($route) |
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| 78 | |||
| 79 | /** |
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| 80 | * Perform a regular expression match. |
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| 81 | * |
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| 82 | * @param array $patterns |
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| 83 | * @param string $subject |
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| 84 | * |
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| 85 | * @return bool |
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| 86 | */ |
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| 87 | View Code Duplication | protected function matches($patterns, $subject) |
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| 101 | } |
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| 102 |
This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function.
Consider the following example. The parameter
$italyis not defined by the methodfinale(...).The most likely cause is that the parameter was removed, but the annotation was not.