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 DMSDocumentCartController extends Controller |
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| 4 | { |
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| 5 | private static $url_handlers = array( |
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| 6 | '$Action//$ID' => 'handleAction', |
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| 7 | ); |
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| 8 | |||
| 9 | private static $allowed_actions = array( |
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| 10 | 'DocumentCartForm', |
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| 11 | 'add', |
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| 12 | 'deduct', |
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| 13 | 'remove', |
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| 14 | ); |
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| 15 | |||
| 16 | /** |
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| 17 | * See {@link DMSDocumentCart::getItems()} |
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| 18 | * |
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| 19 | * @return ArrayList |
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| 20 | */ |
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| 21 | public function items() |
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| 22 | { |
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| 23 | return $this->getCart()->getItems(); |
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| 24 | } |
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| 25 | |||
| 26 | /** |
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| 27 | * Prepares receiver info for the template. |
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| 28 | * Additionally it uses Zend_Locale to retrieve the localised spelling of the Country |
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| 29 | * |
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| 30 | * @return array |
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| 31 | */ |
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| 32 | public function getReceiverInfo() |
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| 49 | |||
| 50 | /** |
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| 51 | * See DMSDocumentCart::isCartEmpty() |
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| 52 | * |
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| 53 | * @return bool |
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| 54 | */ |
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| 55 | public function getIsCartEmpty() |
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| 59 | |||
| 60 | /** |
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| 61 | * Add quantity to an item that exists in {@link DMSDocumentCart}. |
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| 62 | * If the item does nt exist, try to add a new item of the particular |
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| 63 | * class given the URL parameters available. |
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| 64 | * |
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| 65 | * @param SS_HTTPRequest $request |
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| 66 | * |
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| 67 | * @return SS_HTTPResponse|string |
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| 68 | */ |
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| 69 | public function add(SS_HTTPRequest $request) |
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| 101 | |||
| 102 | /** |
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| 103 | * Deduct quantity from an item that exists in {@link DMSDocumentCart} |
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| 104 | * |
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| 105 | * @param SS_HTTPRequest $request |
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| 106 | * |
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| 107 | * @return SS_HTTPResponse|string |
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| 108 | */ |
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| 109 | public function deduct(SS_HTTPRequest $request) |
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| 126 | |||
| 127 | /** |
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| 128 | * Completely remove an item that exists in {@link DMSDocumentCart} |
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| 129 | * |
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| 130 | * @param SS_HTTPRequest $request |
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| 131 | * |
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| 132 | * @return string |
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| 133 | */ |
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| 134 | public function remove(SS_HTTPRequest $request) |
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| 146 | |||
| 147 | /** |
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| 148 | * Retrieves a {@link DMSDocumentCart} instance |
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| 149 | * |
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| 150 | * @return DMSDocumentCart |
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| 151 | */ |
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| 152 | public function getCart() |
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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.