iterator_apply
iterator_apply
(PHP 5 >= 5.1.0, PHP 7)
iterator_apply — Call a function for every element in an iterator
Description
int iterator_apply ( Traversable $iterator , callable $function [, array $args ] )
Calls a function for every element in an iterator.
Parameters
-
iterator -
The class to iterate over.
-
function -
The callback function to call on every element.
Note: The function must return
TRUEin order to continue iterating over theiterator. -
args -
Arguments to pass to the callback function.
Return Values
Returns the iteration count.
Examples
Example #1 iterator_apply() example
<?php
function print_caps(Iterator $iterator) {
echo strtoupper($iterator->current()) . "\n";
return TRUE;
}
$it = new ArrayIterator(array("Apples", "Bananas", "Cherries"));
iterator_apply($it, "print_caps", array($it));
?> The above example will output:
APPLES BANANAS CHERRIES
See Also
- array_walk() - Apply a user supplied function to every member of an array
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/function.iterator-apply.php
