La classe InfiniteIterator

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

Introduction

La classe InfiniteIterator permet l'itération infinie sur un itérateur sans avoir besoin de remettre à zéro manuellement dès que la fin est atteinte.

Synopsis de la classe

InfiniteIterator extends IteratorIterator implements OuterIterator {

/* Méthodes */

public __construct(Iterator $iterator)

public next(): void

/* Méthodes héritées */

public IteratorIterator::__construct(Traversable $iterator)

public IteratorIterator::current(): mixed

public IteratorIterator::getInnerIterator(): Traversable

public IteratorIterator::key(): mixed

public IteratorIterator::next(): void

public IteratorIterator::rewind(): void

public IteratorIterator::valid(): bool

}

Sommaire

InfiniteIterator::__construct — Construit un InfiniteIterator
InfiniteIterator::next — Avance l'itérateur ou le replace au début

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User Contributed Notes 2 notes

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Anonymous ¶

11 years ago


to loop through object keys and reset to the start, try this:
<?php

$obj = new stdClass();
$obj->Mon = "Monday";
$obj->Tue = "Tuesday";
$obj->Wed = "Wednesday";
$obj->Thu = "Thursday";
$obj->Fri = "Friday";
$obj->Sat = "Saturday";
$obj->Sun = "Sunday";

$infinate = new InfiniteIterator(new ArrayIterator($obj));
foreach ( new LimitIterator($infinate, 0, 14) as $value ) {
    print($value . PHP_EOL);
}

?>

will output:

Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday

Can be useful when doing date operations or recurring events

down

vascowhite at gmail dot com ¶

10 years ago


It is important to realise that rewind() must be called on any iterator before using it or you may experience undefined behaviour, see example code and output here http://3v4l.org/rvNpU

See this bug report https://bugs.php.net/bug.php?id=63823&edit=2 for a fuller explanation.

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