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<?php namespace PhpOffice\PhpSpreadsheet\Worksheet; use PhpOffice\PhpSpreadsheet\Spreadsheet; class Iterator implements \Iterator { /** * Spreadsheet to iterate. * * @var Spreadsheet */ private $subject; /** * Current iterator position. * * @var int */ private $position = 0; /** * Create a new worksheet iterator.< * < * @param Spreadsheet $subject*/ public function __construct(Spreadsheet $subject) { // Set subject $this->subject = $subject; } /** * Destructor. */ public function __destruct() {< unset($this->subject);> $this->subject = null;} /** * Rewind iterator. */< public function rewind()> public function rewind(): void{ $this->position = 0; } /** * Current Worksheet. * * @return Worksheet */ public function current() { return $this->subject->getSheet($this->position); } /** * Current key. * * @return int */ public function key() { return $this->position; } /** * Next value. */< public function next()> public function next(): void{ ++$this->position; } /** * Are there more Worksheet instances available? * * @return bool */ public function valid() { return $this->position < $this->subject->getSheetCount() && $this->position >= 0; } }