| 1 | <?php |
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| 5 | trait PaginatedList |
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| 6 | { |
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| 7 | /* @var integer */ |
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| 8 | protected $position = 0; |
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| 9 | |||
| 10 | /** |
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| 11 | * Rewind the Iterator to the first element. |
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| 12 | * |
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| 13 | * @link http://php.net/manual/en/iterator.rewind.php |
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| 14 | * @return void |
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| 15 | */ |
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| 16 | public function rewind() |
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| 20 | |||
| 21 | /** |
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| 22 | * Checks if current position is valid. |
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| 23 | * |
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| 24 | * @link http://php.net/manual/en/iterator.valid.php |
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| 25 | * @return boolean |
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| 26 | */ |
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| 27 | public function valid() |
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| 35 | |||
| 36 | /** |
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| 37 | * Return the current element |
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| 38 | * @link http://php.net/manual/en/iterator.current.php |
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| 39 | * @return mixed |
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| 40 | */ |
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| 41 | public function current() |
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| 45 | |||
| 46 | /** |
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| 47 | * Move forward to next element |
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| 48 | * @link http://php.net/manual/en/iterator.next.php |
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| 49 | * @return void |
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| 50 | */ |
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| 51 | public function next() |
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| 55 | |||
| 56 | /** |
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| 57 | * Return the key of the current element |
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| 58 | * @link http://php.net/manual/en/iterator.key.php |
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| 59 | * @return integer|null Scalar on success, or null on failure. |
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| 60 | */ |
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| 61 | public function key() |
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| 65 | } |
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| 66 |
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: