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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| 28 | View Code Duplication | class ErrorObject |
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| 29 | { |
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| 30 | /** |
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| 31 | * @var string[] List of messages describing found errors |
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| 32 | */ |
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| 33 | private $errors = []; |
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| 34 | |||
| 35 | /** |
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| 36 | * Check if any errors have been found |
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| 37 | */ |
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| 38 | public function hasErrors(): bool |
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| 42 | |||
| 43 | /** |
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| 44 | * Get list of messages describing found errors |
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| 45 | * |
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| 46 | * @return string[] |
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| 47 | */ |
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| 48 | public function getErrors(): array |
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| 52 | |||
| 53 | /** |
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| 54 | * Add error message to store |
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| 55 | */ |
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| 56 | public function addError(string $msg, string ...$args) |
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| 61 | /** |
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| 62 | * Reset error store |
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| 63 | */ |
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| 64 | public function resetErrors() |
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| 68 | } |
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Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.