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:
Complex classes like WflLists often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use WflLists, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 13 | class WflLists |
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| 14 | { |
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| 15 | public $value; |
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| 16 | public $selected; |
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| 17 | public $path = 'uploads'; |
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| 18 | public $size; |
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| 19 | public $emptyselect; |
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| 20 | public $type; |
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| 21 | public $prefix; |
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| 22 | public $suffix; |
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| 23 | |||
| 24 | /** |
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| 25 | * @param string $path |
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| 26 | * @param null $value |
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| 27 | * @param string $selected |
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| 28 | * @param int $size |
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| 29 | * @param int $emptyselect |
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| 30 | * @param int $type |
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| 31 | * @param string $prefix |
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| 32 | * @param string $suffix |
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| 33 | */ |
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| 34 | public function __construct( |
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| 51 | |||
| 52 | /** |
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| 53 | * @param array $this_array |
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| 54 | * |
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| 55 | * @return string |
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| 56 | */ |
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| 57 | public function getarray($this_array) |
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| 75 | |||
| 76 | /** |
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| 77 | * Private to be called by other parts of the class |
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| 78 | * @param $dirname |
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| 79 | * @return array |
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| 80 | */ |
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| 81 | public function getDirListAsArray($dirname) |
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| 99 | |||
| 100 | /** |
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| 101 | * @param $dirname |
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| 102 | * @param string $type |
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| 103 | * @param string $prefix |
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| 104 | * @param int $noselection |
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| 105 | * |
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| 106 | * @return array |
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| 107 | */ |
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| 108 | public static function getListTypeAsArray($dirname, $type = '', $prefix = '', $noselection = 1) |
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| 154 | |||
| 155 | /** |
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| 156 | * @param int $type |
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| 157 | * @param $selected |
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| 158 | * |
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| 159 | * @return mixed |
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| 160 | */ |
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| 161 | public static function getForum($type = 1, $selected) |
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| 197 | |||
| 198 | /** |
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| 199 | * @return null |
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| 200 | */ |
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| 201 | public function getValue() |
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| 205 | |||
| 206 | public function getSelected() |
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| 210 | |||
| 211 | /** |
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| 212 | * @return string |
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| 213 | */ |
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| 214 | public function getPath() |
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| 218 | |||
| 219 | /** |
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| 220 | * @return int |
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| 221 | */ |
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| 222 | public function getSize() |
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| 226 | |||
| 227 | /** |
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| 228 | * @return int |
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| 229 | */ |
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| 230 | public function getEmptySelect() |
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| 234 | |||
| 235 | /** |
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| 236 | * @return int |
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| 237 | */ |
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| 238 | public function getType() |
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| 242 | |||
| 243 | public function getPrefix() |
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| 247 | |||
| 248 | public function getSuffix() |
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| 252 | } |
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| 253 |
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.