iterator_apply

(PHP 5 >= 5.1.0, PHP 7)

iterator_apply — Call a function for every element in an iterator

Descrierea

iterator_apply ( Traversable $iterator , callable $function [, array $args = NULL ] ) : int

Calls a function for every element in an iterator.

Parametri

iterator

The iterator object to iterate over.

function

The callback function to call on every element. This function only receives the given args, so it is nullary by default. If count($args) === 3, for instance, the callback function is ternary.

Notă: The function must return TRUE in order to continue iterating over the iterator.

args

An array of arguments; each element of args is passed to the callback function as separate argument.

Valorile întoarse

Returns the iteration count.

Exemple

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));
?>

Exemplul de mai sus va afișa:

APPLES
BANANAS
CHERRIES

A se vedea și

  • array_walk() - Apply a user supplied function to every member of an array