(PHP 5 >= 5.1.0, PHP 7)
Count the elements in an iterator
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.
Returns:
The number of elements in iterator.
Examples:
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)
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
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)
Please login to continue.