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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26 | class GroupsController extends Controller |
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27 | { |
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28 | /** |
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29 | * Shows the project groups view. |
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30 | * |
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31 | * @return \Illuminate\View\View |
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32 | */ |
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33 | public function indexAction() |
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40 | |||
41 | /** |
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42 | * Shows the group view. |
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43 | * |
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44 | * @return \Illuminate\View\View |
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45 | */ |
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46 | public function showAction($path) |
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54 | |||
55 | /** |
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56 | * Shows the new project view. |
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57 | * |
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58 | * @return \Illuminate\View\View |
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59 | */ |
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60 | public function newAction() |
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65 | |||
66 | /** |
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67 | * Creates a new project. |
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68 | * |
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69 | * @return \Illuminate\Http\RedirectResponse |
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70 | */ |
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71 | public function createAction() |
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72 | { |
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73 | $groupData = Request::get('group'); |
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74 | $groupData['type'] = 'group'; |
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75 | $groupData['user_id'] = Auth::user()->id; |
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76 | try { |
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77 | $group = $this->dispatchFromArray(AddOwnerCommand::class, $groupData); |
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78 | } catch (ValidationException $e) { |
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79 | return Redirect::route('groups.new') |
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80 | ->withInput(Request::all()) |
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81 | ->withTitle(sprintf('%s %s', trans('dashboard.notifications.whoops'), trans('gitamin.groups.add.failure'))) |
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82 | ->withErrors($e->getMessageBag()); |
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83 | } catch (QueryException $e) { |
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84 | return Redirect::route('groups.new') |
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85 | ->withInput(Request::all()) |
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86 | ->withTitle(sprintf('%s %s', trans('dashboard.notifications.whoops'), trans('gitamin.groups.add.failure'))) |
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87 | ->withErrors('Path has been used'); |
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88 | } |
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89 | |||
90 | return Redirect::route('dashboard.groups.index') |
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91 | ->withSuccess(sprintf('%s %s', trans('dashboard.notifications.awesome'), trans('gitamin.groups.add.success'))); |
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92 | } |
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93 | |||
94 | /** |
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95 | * Shows the edit project namespace view. |
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96 | * |
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97 | * @param \Gitamin\Models\Owner $namespace |
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98 | * |
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99 | * @return \Illuminate\View\View |
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100 | */ |
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101 | public function editAction($path) |
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109 | |||
110 | /** |
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111 | * Updates a project namespace. |
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112 | * |
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113 | * @param \Gitamin\Models\Owner $namespace |
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114 | * |
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115 | * @return \Illuminate\Http\RedirectResponse |
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116 | */ |
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117 | View Code Duplication | public function updateAction($path) |
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135 | } |
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136 |
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: