The InfiniteIterator class
(PHP 5 >= 5.1.0)
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
$iterator
)$iterator
)Table of Contents
- InfiniteIterator::__construct — Constructs an InfiniteIterator
- InfiniteIterator::next — Moves the inner Iterator forward or rewinds it
用户评论:
[#1] vascowhite at gmail dot com [2013-06-04 13:54:09]
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.
[#2] Anonymous [2012-10-16 00:47:36]
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