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 →
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