Класс InfiniteIterator

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

Введение

Класс InfiniteIterator позволяет сделать бесконечный перебор итератора без необходимости вручную перебирать итератор до момента достижения его конца.

Обзор классов

InfiniteIterator extends IteratorIterator implements OuterIterator {

/* Методы */

public __construct(Iterator $iterator)

public next(): void

/* Наследуемые методы */

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

}

Содержание

InfiniteIterator::__construct — Конструктор класса InfiniteIterator
InfiniteIterator::next — Перемещает итератор на одну позицию вперёд или в начало

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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

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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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