(PHP 5 >= 5.1.0, PHP 7)
NoRewindIterator::__construct — Construct a NoRewindIterator
iteratorThe iterator being used.
A NoRewindIterator() based on the passed in
iterator.
Example #1 NoRewindIterator::__construct() example
The second loop does not output because the iterator is only used once, as it does not rewind.
<?php
$fruit = array('apple', 'banana', 'cranberry');
$arr = new ArrayObject($fruit);
$it = new NoRewindIterator($arr->getIterator());
echo "Fruit A:\n";
foreach( $it as $item ) {
echo $item . "\n";
}
echo "Fruit B:\n";
foreach( $it as $item ) {
echo $item . "\n";
}
?>
以上例程的输出类似于：
Fruit A: apple banana cranberry Fruit B: