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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| 24 | class SktmController extends Controller |
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| 25 | { |
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| 26 | /** |
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| 27 | * Create a new controller instance. |
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| 28 | * |
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| 29 | * @return void |
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| 30 | */ |
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| 31 | protected $sktm; |
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| 32 | protected $master_sktm; |
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| 33 | protected $user; |
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| 34 | |||
| 35 | public function __construct(Sktm $sktm, MasterSktm $master_sktm, User $user) |
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| 41 | |||
| 42 | /** |
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| 43 | * Display a listing of the resource. |
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| 44 | * |
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| 45 | * @return \Illuminate\Http\Response |
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| 46 | */ |
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| 47 | public function index(Request $request) |
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| 48 | { |
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| 49 | if (request()->has('sort')) { |
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| 50 | list($sortCol, $sortDir) = explode('|', request()->sort); |
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| 51 | |||
| 52 | $query = $this->sktm->orderBy($sortCol, $sortDir); |
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| 53 | } else { |
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| 54 | $query = $this->sktm->orderBy('id', 'asc'); |
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| 55 | } |
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| 56 | |||
| 57 | if ($request->exists('filter')) { |
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| 58 | $query->where(function($q) use($request) { |
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| 59 | $value = "%{$request->filter}%"; |
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| 60 | $q->where('nomor_un', 'like', $value) |
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| 61 | ->orWhere('nilai', 'like', $value); |
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| 62 | }); |
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| 63 | } |
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| 64 | |||
| 65 | $perPage = request()->has('per_page') ? (int) request()->per_page : null; |
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| 66 | $response = $query->paginate($perPage); |
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| 67 | |||
| 68 | foreach($response as $master_sktm){ |
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| 69 | array_set($response->data, 'master_sktm', $master_sktm->master_sktm->nama); |
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| 70 | } |
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| 71 | |||
| 72 | foreach($response as $user){ |
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| 73 | array_set($response->data, 'user', $user->user->name); |
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| 74 | } |
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| 75 | |||
| 76 | return response()->json($response) |
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| 77 | ->header('Access-Control-Allow-Origin', '*') |
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| 78 | ->header('Access-Control-Allow-Methods', 'GET'); |
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| 79 | } |
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| 80 | |||
| 81 | /** |
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| 82 | * Show the form for creating a new resource. |
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| 83 | * |
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| 84 | * @return \Illuminate\Http\Response |
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| 85 | */ |
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| 86 | |||
| 87 | public function create() |
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| 106 | |||
| 107 | /** |
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| 108 | * Display the specified resource. |
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| 109 | * |
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| 110 | * @param \App\Sktm $sktm |
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| 111 | * @return \Illuminate\Http\Response |
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| 112 | */ |
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| 113 | public function store(Request $request) |
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| 155 | |||
| 156 | /** |
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| 157 | * Store a newly created resource in storage. |
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| 158 | * |
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| 159 | * @param \Illuminate\Http\Request $request |
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| 160 | * @return \Illuminate\Http\Response |
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| 161 | */ |
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| 162 | View Code Duplication | public function show($id) |
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| 173 | |||
| 174 | /** |
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| 175 | * Show the form for editing the specified resource. |
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| 176 | * |
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| 177 | * @param \App\Sktm $sktm |
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| 178 | * @return \Illuminate\Http\Response |
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| 179 | */ |
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| 180 | |||
| 181 | public function edit($id) |
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| 195 | |||
| 196 | /** |
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| 197 | * Update the specified resource in storage. |
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| 198 | * |
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| 199 | * @param \Illuminate\Http\Request $request |
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| 200 | * @param \App\Sktm $sktm |
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| 201 | * @return \Illuminate\Http\Response |
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| 202 | */ |
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| 203 | public function update(Request $request, $id) |
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| 257 | |||
| 258 | /** |
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| 259 | * Remove the specified resource from storage. |
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| 260 | * |
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| 261 | * @param \App\Sktm $sktm |
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| 262 | * @return \Illuminate\Http\Response |
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| 263 | */ |
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| 264 | View Code Duplication | public function destroy($id) |
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| 276 | } |
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| 277 |
Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArrayis initialized the first time when the foreach loop is entered. You can also see that the value of thebarkey is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.