NoRewindIterator::__construct()
(PHP 5 >= 5.1.0, PHP 7)
Construct a NoRewindIterator
说明
public NoRewindIterator::__construct( Iterator$iterator)
Constructs a NoRewindIterator.
参数
- $iterator
The iterator being used.
返回值
A NoRewindIterator() based on the passed in $iterator.
范例
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:
参见
- NoRewindIterator::valid() Validates the iterator