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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| 15 | class Requests_Utility_CaseInsensitiveDictionary implements ArrayAccess, IteratorAggregate { |
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| 16 | /** |
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| 17 | * Actual item data |
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| 18 | * |
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| 19 | * @var array |
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| 20 | */ |
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| 21 | protected $data = array(); |
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| 22 | |||
| 23 | /** |
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| 24 | * Creates a case insensitive dictionary. |
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| 25 | * |
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| 26 | * @param array $data Dictionary/map to convert to case-insensitive |
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| 27 | */ |
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| 28 | public function __construct(array $data = array()) { |
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| 33 | |||
| 34 | /** |
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| 35 | * Check if the given item exists |
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| 36 | * |
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| 37 | * @param string $key Item key |
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| 38 | * @return boolean Does the item exist? |
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| 39 | */ |
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| 40 | public function offsetExists($key) { |
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| 44 | |||
| 45 | /** |
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| 46 | * Get the value for the item |
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| 47 | * |
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| 48 | * @param string $key Item key |
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| 49 | * @return string Item value |
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| 50 | */ |
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| 51 | View Code Duplication | public function offsetGet($key) { |
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| 59 | |||
| 60 | /** |
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| 61 | * Set the given item |
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| 62 | * |
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| 63 | * @throws Requests_Exception On attempting to use dictionary as list (`invalidset`) |
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| 64 | * |
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| 65 | * @param string $key Item name |
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| 66 | * @param string $value Item value |
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| 67 | */ |
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| 68 | public function offsetSet($key, $value) { |
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| 76 | |||
| 77 | /** |
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| 78 | * Unset the given header |
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| 79 | * |
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| 80 | * @param string $key |
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| 81 | */ |
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| 82 | public function offsetUnset($key) { |
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| 85 | |||
| 86 | /** |
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| 87 | * Get an iterator for the data |
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| 88 | * |
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| 89 | * @return ArrayIterator |
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| 90 | */ |
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| 91 | public function getIterator() { |
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| 94 | |||
| 95 | /** |
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| 96 | * Get the headers as an array |
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| 97 | * |
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| 98 | * @return array Header data |
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| 99 | */ |
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| 100 | public function getAll() { |
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| 103 | } |
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| 104 |
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.