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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3 | class LancamentoVendasController extends AppController { |
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5 | public function salvar_lancamento($id_venda, $dados, $valor_total, $id_usuario) { |
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19 | View Code Duplication | public function cancelar($id_venda, $id_cliente) { |
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42 | View Code Duplication | public function aprovar($id_venda, $id_cliente) { |
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64 | } |
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.