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PHP - Manual: SeekableIterator::seek

2024-12-23

SeekableIterator::seek

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

SeekableIterator::seekSeeks to a position

说明

public SeekableIterator::seek(int $offset): void

Seeks to a given position in the iterator.

参数

offset

The position to seek to.

返回值

没有返回值。

错误/异常

Implementations should throw an OutOfBoundsException if the offset is not seekable.

范例

示例 #1 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
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官方地址:https://www.php.net/manual/en/seekableiterator.seek.php

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