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 | ||
| 11 | final class JSONEncoder | ||
| 12 | { | ||
| 13 | private function __construct() | ||
| 16 | |||
| 17 | 9 | View Code Duplication | public static function encode($value) | 
| 33 | |||
| 34 | View Code Duplication | public static function decode($json) | |
| 50 | } | ||
| 51 |