Rechercher une fonction PHP

iterator_apply

Contents

(PHP 5 >= 5.1.0, PHP 7)

iterator_apply — Call a function for every element in an iterator

Description

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

Calls a function for every element in an iterator.

PHP: iterator_apply - Manual Home of Manuel PHP  Contents Haut

Parameters

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.

Note: 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.

PHP: iterator_apply - Manual Home of Manuel PHP  Contents Haut

Return Values

Returns the iteration count.

PHP: iterator_apply - Manual Home of Manuel PHP  Contents Haut

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

PHP: iterator_apply - Manual Home of Manuel PHP  Contents Haut

See Also

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

Find a PHP function

English translation

You have asked to visit this site in English. For now, only the interface is translated, but not all the content yet.

If you want to help me in translations, your contribution is welcome. All you need to do is register on the site, and send me a message asking me to add you to the group of translators, which will give you the opportunity to translate the pages you want. A link at the bottom of each translated page indicates that you are the translator, and has a link to your profile.

Thank you in advance.

Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-function.iterator-apply.html

The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.

References

  1. View the html document Language of the document:fr Manuel PHP : http://php.net

These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author This site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.

Contents Haut