PHP 8.4.0 RC4 available for testing

    The InfiniteIterator class

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

    Introduction

    The InfiniteIterator allows one to infinitely iterate over an iterator without having to manually rewind the iterator upon reaching its end.

    Class synopsis

    class InfiniteIterator extends IteratorIterator {
    /* Methods */
    public __construct(Iterator $iterator)
    public next(): void
    /* Inherited methods */
    public IteratorIterator::current(): mixed
    public IteratorIterator::getInnerIterator(): ?Iterator
    public IteratorIterator::key(): mixed
    public IteratorIterator::next(): void
    public IteratorIterator::rewind(): void
    public IteratorIterator::valid(): bool
    }

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    User Contributed Notes 2 notes

    up
    14
    Anonymous
    12 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
    up
    10
    vascowhite at gmail dot com
    11 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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