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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24 | class InvalidKeyException extends RuntimeException |
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25 | { |
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26 | /** |
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27 | * Creates an exception for an invalid key. |
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28 | * |
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29 | * @param mixed $key The invalid key. |
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30 | * @param Exception|null $cause The exception that caused this exception. |
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31 | * |
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32 | * @return static The created exception. |
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33 | */ |
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34 | 154 | View Code Duplication | public static function forKey($key, Exception $cause = null) |
41 | } |
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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.