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119 lines
1.8 KiB
PHP
119 lines
1.8 KiB
PHP
<?php
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/**
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* This file is part of the "dibi" - smart database abstraction layer.
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*
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* Copyright (c) 2005, 2010 David Grudl (http://davidgrudl.com)
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*
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* This source file is subject to the "dibi license", and/or
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* GPL license. For more information please see http://dibiphp.com
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* @package dibi
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*/
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/**
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* External result set iterator.
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*
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* This can be returned by DibiResult::getIterator() method or using foreach
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* <code>
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* $result = dibi::query('SELECT * FROM table');
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* foreach ($result as $row) {
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* print_r($row);
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* }
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* unset($result);
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* </code>
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*
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* @author David Grudl
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*/
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class DibiResultIterator implements Iterator, Countable
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{
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/** @var DibiResult */
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private $result;
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/** @var int */
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private $row;
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/** @var int */
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private $pointer;
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/**
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* @param DibiResult
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*/
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public function __construct(DibiResult $result)
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{
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$this->result = $result;
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}
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/**
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* Rewinds the iterator to the first element.
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* @return void
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*/
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public function rewind()
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{
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$this->pointer = 0;
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$this->result->seek(0);
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$this->row = $this->result->fetch();
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}
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/**
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* Returns the key of the current element.
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* @return mixed
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*/
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public function key()
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{
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return $this->pointer;
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}
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/**
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* Returns the current element.
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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 $this->row;
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}
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/**
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* Moves forward to next element.
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* @return void
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*/
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public function next()
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{
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$this->row = $this->result->fetch();
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$this->pointer++;
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}
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/**
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* Checks if there is a current element after calls to rewind() or next().
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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 !empty($this->row);
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}
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/**
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* Required by the Countable interface.
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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 $this->result->getRowCount();
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}
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}
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