iterator_count
iterator_count
(PHP 5 >= 5.1.0, PHP 7)
iterator_count — Count the elements in an iterator
Description
int iterator_count ( Traversable $iterator )
Count the elements in an iterator. iterator_count() is not guaranteed to retain the current position of the iterator.
Parameters
iterator
The iterator being counted.
Return Values
The number of elements in iterator.
Examples
Example #1 iterator_count() example
<?php
$iterator = new ArrayIterator(array('recipe'=>'pancakes', 'egg', 'milk', 'flour')
var_dump(iterator_count($iterator)
?>
The above example will output:
int(4)
Example #2 iterator_count() modifies position
<?php
$iterator = new ArrayIterator(['one', 'two', 'three']
var_dump($iterator->current()
var_dump(iterator_count($iterator)
var_dump($iterator->current()
?>
The above example will output:
string(3) "one"
int(3)
NULL
Example #3 iterator_count() in foreach loops
<?php
$iterator = new ArrayIterator(['one', 'two', 'three']
foreach ($iterator as $key => $value) {
echo "$key: $value (", iterator_count($iterator), ")\n";
}?>
The above example will output:
0: one (3)
← iterator_apply
iterator_to_array →
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/function.iterator-count.php
