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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| 31 | class DownloaderComment extends AbstractCheck  | 
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| 32 | { | 
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| 33 | /**  | 
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| 34 | * Guess magento edition and version  | 
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| 35 | *  | 
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| 36 | * @return array|boolean  | 
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| 37 | */  | 
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| 38 | public function getInfo()  | 
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| 49 | |||
| 50 | /**  | 
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| 51 | * Guess Magento year from downloader url  | 
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| 52 | *  | 
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| 53 | * @param Response $response  | 
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| 54 | *  | 
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| 55 | * @return string|boolean  | 
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| 56 | */  | 
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| 57 | public function getMagentoYear(Response $response)  | 
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| 68 | |||
| 69 | /**  | 
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| 70 | * Guess Magento version from downloader body  | 
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| 71 | *  | 
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| 72 | * @param Response $response  | 
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| 73 | *  | 
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| 74 | * @return string|boolean  | 
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| 75 | */  | 
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| 76 | public function getMagentoVersion(Response $response)  | 
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| 85 | |||
| 86 | /**  | 
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| 87 | * Guess Magento edition from copyright year and version  | 
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| 88 | *  | 
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| 89 | * @param string $year  | 
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| 90 | * @param string $version  | 
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| 91 | *  | 
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| 92 | * @return string  | 
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| 93 | */  | 
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| 94 | protected function getMagentoEditionByYearAndVersion($year, $version)  | 
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| 98 | }  | 
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| 99 | 
In PHP, under loose comparison (like
==, or!=, orswitchconditions), values of different types might be equal.For
stringvalues, the empty string''is a special case, in particular the following results might be unexpected: