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 |
||
| 14 | View Code Duplication | class Catalog extends \Model { |
|
| 15 | static $cols = [ |
||
|
|
|||
| 16 | 'name' => ['type' => 'text'], |
||
| 17 | 'parent_id' => ['type' => 'select', 'source' => 'relation', 'relation' => 'parent'] |
||
| 18 | ]; |
||
| 19 | |||
| 20 | static function relations() { |
||
| 33 | } |
The PSR-2 coding standard requires that all properties in a class have their visibility explicitly declared. If you declare a property using
the property is implicitly global.
To learn more about the PSR-2, please see the PHP-FIG site on the PSR-2.