Construct a NoRewindIterator

# NoRewindIterator::__construct

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

NoRewindIterator::__construct — Construct a NoRewindIterator

### 说明

public function NoRewindIterator::__construct(Iterator `$iterator`)

Constructs a NoRewindIterator.

### 参数

`iterator`

  The iterator being used.

### 示例

示例 #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";
    }
    ?>

以上示例的输出类似于：

    Fruit A:
    apple
    banana
    cranberry
    Fruit B:

### 参见

- NoRewindIterator::valid() - Validates the iterator

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