LimitIterator (class)
Introduction
(PHP 5 >= 5.1.0, PHP 7)
The LimitIterator class allows iteration over a limited subset of items in an Iterator.
Class synopsis
LimitIterator extends IteratorIterator implements OuterIterator {
/* Methods */
public __construct ( Iterator $iterator [, int $offset = 0 [, int $count = -1 ]] )public mixed current ( void )public Iterator getInnerIterator ( void )public int getPosition ( void )public mixed key ( void )public void next ( void )public void rewind ( void )public int seek ( int $position )public bool valid ( void )}
Examples
Example #1 LimitIterator usage example
<?php
//?Create?an?iterator?to?be?limited
$fruits?=?new?ArrayIterator(array(
????'apple',
????'banana',
????'cherry',
????'damson',
????'elderberry'
));
//?Loop?over?first?three?fruits?only
foreach?(new?LimitIterator($fruits,?0,?3)?as?$fruit)?{
????var_dump($fruit);
}
echo?"\n";
//?Loop?from?third?fruit?until?the?end
//?Note:?offset?starts?from?zero?for?apple
foreach?(new?LimitIterator($fruits,?2)?as?$fruit)?{
????var_dump($fruit);
}
?>The above example will output:
string(5) "apple"
string(6) "banana"
string(6) "cherry"
string(6) "cherry"
string(6) "damson"
string(10) "elderberry"Table of Contents
- LimitIterator::__construct — Construct a LimitIterator
- LimitIterator::current — Get current element
- LimitIterator::getInnerIterator — Get inner iterator
- LimitIterator::getPosition — Return the current position
- LimitIterator::key — Get current key
- LimitIterator::next — Move the iterator forward
- LimitIterator::rewind — Rewind the iterator to the specified starting offset
- LimitIterator::seek — Seek to the given position
- LimitIterator::valid — Check whether the current element is valid
← IteratorIterator::valid
LimitIterator::__construct →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
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