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<?php namespace RocketTheme\Toolbox\ArrayTraits; /** * Implements \Iterator interface. * * @package RocketTheme\Toolbox\ArrayTraits * @author RocketTheme * @license MIT * * @property array $items */ trait Iterator { /** * Hack to make Iterator work together with unset(). * * @var bool */ private $iteratorUnset = false; /** * Returns the current element. * * @return mixed Can return any type. */ public function current() { return current($this->items); } /** * Returns the key of the current element. * * @return mixed Returns scalar on success, or NULL on failure. */ public function key() { return key($this->items); } /** * Moves the current position to the next element. * * @return void */ public function next() { if ($this->iteratorUnset) { // If current item was unset, position is already in the next element (do nothing). $this->iteratorUnset = false; } else { next($this->items); } } /** * Rewinds back to the first element of the Iterator. * * @return void */ public function rewind() { $this->iteratorUnset = false; reset($this->items); } /** * This method is called after Iterator::rewind() and Iterator::next() to check if the current position is valid. * * @return bool Returns TRUE on success or FALSE on failure. */ public function valid() { return key($this->items) !== null; } }
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