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 |
||
| 7 | class Hook_Manager { |
||
| 8 | |||
| 9 | /** |
||
| 10 | * An array containing all of the hooks that we've registered. |
||
| 11 | * |
||
| 12 | * @var array |
||
| 13 | */ |
||
| 14 | private $registered_hooks; |
||
| 15 | |||
| 16 | /** |
||
| 17 | * The constructor. |
||
| 18 | */ |
||
| 19 | public function __construct() { |
||
| 22 | |||
| 23 | /** |
||
| 24 | * Adds an action to WordPress and registers it internally. |
||
| 25 | * |
||
| 26 | * @param string $tag The name of the action which is hooked. |
||
| 27 | * @param callable $callable The function to call. |
||
| 28 | * @param int $priority Used to specify the priority of the action. |
||
| 29 | * @param int $accepted_args Used to specify the number of arguments the callable accepts. |
||
| 30 | */ |
||
| 31 | View Code Duplication | public function add_action( $tag, $callable, $priority = 10, $accepted_args = 1 ) { |
|
| 39 | |||
| 40 | /** |
||
| 41 | * Adds a filter to WordPress and registers it internally. |
||
| 42 | * |
||
| 43 | * @param string $tag The name of the filter which is hooked. |
||
| 44 | * @param callable $callable The function to call. |
||
| 45 | * @param int $priority Used to specify the priority of the filter. |
||
| 46 | * @param int $accepted_args Used to specify the number of arguments the callable accepts. |
||
| 47 | */ |
||
| 48 | View Code Duplication | public function add_filter( $tag, $callable, $priority = 10, $accepted_args = 1 ) { |
|
| 56 | |||
| 57 | /** |
||
| 58 | * Removes all of the registered hooks. |
||
| 59 | */ |
||
| 60 | public function reset() { |
||
| 68 | } |
||
| 69 |