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 |
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3 | class SiteTreeListboxField extends ListboxField |
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4 | { |
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5 | |||
6 | /** |
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7 | * |
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8 | * @var Int |
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9 | */ |
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10 | protected $siteTreeParentID = 0; |
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11 | |||
12 | /** |
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13 | * |
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14 | * @var Array |
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15 | */ |
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16 | protected $arrayOfAllowedIDs = array(); |
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17 | |||
18 | /** |
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19 | * |
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20 | * @var array |
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21 | */ |
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22 | protected $classNamesForItems = array("SiteTree"); |
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23 | |||
24 | /** |
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25 | * |
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26 | * @var Array |
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27 | */ |
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28 | protected $siteTreeParentAllChildren = array(); |
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29 | |||
30 | /** |
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31 | * Creates a new dropdown field. |
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32 | * |
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33 | * @param string $name The field name |
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34 | * @param string $title The field title |
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35 | * @param array $source An map of the dropdown items |
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36 | * @param string|array $value You can pass an array of values or a single value like a drop down to be selected |
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37 | * @param int $size Optional size of the select element |
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38 | * @param form The parent form |
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39 | */ |
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40 | public function __construct($name, $title = '', $source = array(), $value = '', $size = null) |
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44 | |||
45 | /** |
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46 | * |
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47 | * @param Int $id |
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48 | */ |
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49 | public function setSiteTreeParentID($id) |
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53 | |||
54 | /** |
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55 | * |
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56 | * @param Int $id |
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57 | * @param Int | string $array |
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58 | */ |
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59 | public function setSiteTreeParentAndChildClassNames($id, $array) |
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64 | |||
65 | /** |
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66 | * |
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67 | * @param Array | str $array |
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68 | */ |
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69 | public function setClassNamesForItems($array) |
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78 | |||
79 | /** |
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80 | * |
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81 | * @param String $str |
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82 | */ |
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83 | public function addClassNameForItems($str) |
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87 | |||
88 | /** |
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89 | * |
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90 | * @param Array | SS_Map |
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91 | */ |
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92 | public function setSource($source) |
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109 | |||
110 | /** |
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111 | * |
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112 | * @return Array |
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113 | */ |
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114 | public function getSource() |
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134 | |||
135 | /** |
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136 | * @param Int |
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137 | * @return Array |
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138 | */ |
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139 | View Code Duplication | private function getAllChildrenForSiteTreeParent($parentID) |
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156 | } |
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157 |
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.