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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18 | class Console extends \Symfony\Component\Console\Application |
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19 | { |
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20 | use EnableDIAnnotations; |
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21 | |||
22 | /** |
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23 | * @inject |
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24 | * @var ConsoleContainerBuilder |
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25 | */ |
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26 | protected $consoleContainerBuilder; |
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27 | |||
28 | |||
29 | /** |
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30 | * @param $className |
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31 | * @throws \Exception |
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32 | */ |
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33 | 1 | public function loadCommandsFromClass($className) |
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47 | |||
48 | /** |
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49 | * @param $fromPath |
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50 | * @param string $namespace |
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51 | * @throws \Exception |
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52 | */ |
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53 | View Code Duplication | public function loadRoutesFromPath($fromPath, $namespace = '') |
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78 | |||
79 | } |
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVar
assignment in line 1 and the$higher
assignment in line 2 are dead. The first because$myVar
is never used and the second because$higher
is always overwritten for every possible time line.