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:
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11 | class StaffController extends Controller |
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14 | public function __construct() |
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20 | public function index() |
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26 | /** |
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27 | * Set the user available. |
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28 | * |
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29 | * @return \Illuminate\Http\RedirectResponse |
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30 | */ |
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31 | View Code Duplication | public function setAvailable() |
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40 | /** |
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41 | * Set the user unavailable. |
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42 | * |
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43 | * @return \Illuminate\Http\RedirectResponse |
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44 | */ |
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45 | View Code Duplication | public function setUnavailable() |
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54 | public function profile() |
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58 | } |
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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
$myArray
is initialized the first time when the foreach loop is entered. You can also see that the value of thebar
key 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.