SeekableIterator::seek()

(PHP 5 >= 5.1.0, PHP 7)

Seeks to a position

说明

abstractpublicSeekableIterator::seek(int $position): void

Seeks to a given position in the iterator.

参数

$position

The position to seek to.

返回值

没有返回值。

错误／异常

Implementations should throw an OutOfBoundsException if the$positionis not seekable.

范例

SeekableIterator::seek() example

Seek to the item at position 3 in the iterator(ArrayIterator implements SeekableIterator).

<?php
$array = array("apple", "banana", "cherry", "damson", "elderberry");
$iterator = new ArrayIterator($array);
$iterator->seek(3);
echo $iterator->current();
?>

以上例程的输出类似于：

damson

参见

• SeekableIterator
• Iterator