NoRewindIterator::__construct

(PHP 5 >= 5.1.0, PHP 7)

NoRewindIterator::__constructConstruct 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

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:

参见

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