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The InfiniteIterator class

(PHP 5 >= 5.1.0, PHP 7)

简介

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

类摘要

InfiniteIterator extends IteratorIterator implements OuterIterator {

/* 方法 */

public __construct ( Iterator $iterator )

public next ( void ) : void

/* 继承的方法 */

public IteratorIterator::__construct ( Traversable $iterator )

public IteratorIterator::current ( void ) : mixed

public IteratorIterator::getInnerIterator ( void ) : Traversable

public IteratorIterator::key ( void ) : mixed

public IteratorIterator::next ( void ) : void

public IteratorIterator::rewind ( void ) : void

public IteratorIterator::valid ( void ) : bool

}

InfiniteIterator::__construct — Constructs an InfiniteIterator
InfiniteIterator::next — Moves the inner Iterator forward or rewinds it

User Contributed Notes

vascowhite at gmail dot com 04-Jun-2013 01:54


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.

Anonymous 16-Oct-2012 12:47


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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The InfiniteIterator class

简介

类摘要

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