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 |
||
9 | abstract class Storage |
||
10 | { |
||
11 | /** |
||
12 | * @var Repository |
||
13 | */ |
||
14 | protected $repository; |
||
15 | |||
16 | public function __construct($repository) |
||
20 | |||
21 | /** |
||
22 | * Converts filename to lowercase, remove non-ascii chars |
||
23 | * And adds "-copy" if the file already exists |
||
24 | * |
||
25 | * @param $filename |
||
26 | * @param $path |
||
27 | * |
||
28 | * @return string |
||
29 | */ |
||
30 | protected function validateFilename($filename, $path) |
||
60 | |||
61 | /** |
||
62 | * Save changes made to the repository |
||
63 | * |
||
64 | * @throws \Exception |
||
65 | */ |
||
66 | protected function save() |
||
70 | } |
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.