SplFileObject::seek

(PHP 5 >= 5.1.0, PHP 7)

SplFileObject::seek — Seek to specified line

说明

public SplFileObject::seek ( int $line_pos ) : void

Seek to specified line in the file.

参数

line_pos

The zero-based line number to seek to.

返回值

没有返回值。

错误／异常

Throws a LogicException if the line_pos is negative.

范例

Example #1 SplFileObject::seek() example

This example outputs the third line of the script which is found at position 2.

<?php
$file = new SplFileObject(__FILE__);
$file->seek(2);
echo $file->current();
?>

以上例程的输出类似于：

$file->seek(2);

参见