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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16 | class UserController extends Controller { |
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17 | |||
18 | public function __construct(PasswordBroker $passwords) |
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25 | |||
26 | /** |
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27 | * Display a listing of the Users. |
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28 | * |
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29 | * @return Response |
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30 | */ |
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31 | public function index() |
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36 | |||
37 | public function new_user() |
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42 | |||
43 | /** |
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44 | * Show the form for creating a new resource. |
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45 | * |
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46 | * @return Response |
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47 | */ |
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48 | public function create(Requests\CreateRequest $request) |
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69 | |||
70 | /** |
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71 | * Show the form for editing the specified resource. |
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72 | * |
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73 | * @param int $id |
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74 | * @return Response |
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75 | */ |
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76 | public function edit($id) |
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77 | { |
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78 | $roles = Role::lists('name', 'id'); |
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79 | $user = User::findOrFail($id); |
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80 | |||
81 | return view('admin.users.edit', ['roles' => $roles, 'user' => $user]); |
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82 | } |
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83 | |||
84 | public function update(Requests\UpdateRequest $request, $id) |
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94 | |||
95 | /** |
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96 | * Remove the specified resource from storage. |
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97 | * |
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98 | * @param int $id |
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99 | * @return Response |
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100 | */ |
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101 | View Code Duplication | public function delete($id) |
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109 | |||
110 | } |
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111 |
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: