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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| 9 | View Code Duplication | class InvalidStatusException extends InvalidArgumentException  | 
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| 10 | { | 
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| 11 | /**  | 
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| 12 | * InvalidStatusException constructor.  | 
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| 13 | * @param string $status the invalid status id that was supplied  | 
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| 14 | * @param string $domain the name of the domain, model, or class that the status belongs to  | 
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| 15 | * @param string $message custom message  | 
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| 16 | * @param int $code  | 
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| 17 | * @param Exception|null $previous  | 
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| 18 | */  | 
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| 19 | public function __construct($status, $domain, $message = '', $code = 0, Exception $previous = null)  | 
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| 33 | }  | 
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| 34 |