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<?php |
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namespace AppBundle\Sync\Entity; |
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/** |
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* Simple collection |
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* |
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* @author Sergey Sadovoi <[email protected]> |
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*/ |
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abstract class Collection implements \Iterator, \Countable |
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{ |
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/** |
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* @var array Collection Entities |
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*/ |
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protected $items = []; |
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/** |
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* @var string Current index of the collection |
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*/ |
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protected $current; |
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/** |
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* Init the collection |
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*/ |
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public function __construct() |
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{ |
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reset($this->items); |
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$this->current = key($this->items); |
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} |
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/** |
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* Rewind |
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*/ |
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public function rewind() |
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{ |
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reset($this->items); |
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$this->current = key($this->items); |
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} |
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/** |
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* Get the current element |
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* |
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* @return mixed |
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*/ |
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public function current() |
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{ |
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return $this->items[$this->current]; |
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} |
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/** |
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* Get the current key |
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* |
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* @return string |
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*/ |
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public function key() |
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{ |
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return $this->current; |
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} |
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/** |
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* Next |
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*/ |
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public function next() |
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{ |
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next($this->items); |
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$this->current = key($this->items); |
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} |
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/** |
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* Check if current element exists |
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* |
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* @return bool |
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*/ |
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public function valid() |
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{ |
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return isset($this->items[$this->current]); |
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} |
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/** |
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* Get total number of collection elements |
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* |
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* @return int |
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*/ |
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public function count() |
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{ |
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return count($this->items); |
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} |
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/** |
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* Check if element exists |
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* |
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* @param string $key Element key |
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* |
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* @return bool |
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*/ |
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public function has($key) |
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{ |
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return isset($this->items[$key]); |
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} |
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/** |
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* Add an item to the collection |
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* |
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* @param mixed $item Item |
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* @param string $key Item key |
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*/ |
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public function add($item, $key = null) |
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{ |
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if (is_null($key)) { |
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$this->items[] = $item; |
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} else { |
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$this->items[$key] = $item; |
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} |
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} |
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/** |
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* Delete item from collection |
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* |
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* @param string $key Item key |
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*/ |
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public function del($key) |
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{ |
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if ($this->has($key)) { |
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unset($this->items[$key]); |
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} |
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} |
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/** |
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* Get item from collection |
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* |
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* @param string $key Item key |
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* |
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* @return null|mixed Collection item |
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*/ |
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6 |
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public function get($key) |
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{ |
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6 |
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return $this->has($key) ? $this->items[$key] : null; |
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} |
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} |
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HopeUA /
dir-sync
