SplFileObject::seek

(PHP 5 >= 5.1.0, PHP 7)

SplFileObject::seekSeek to specified line

Descrierea

public void SplFileObject::seek ( int $line_pos )

Seek to specified line in the file.

Parametri

line_pos

The zero-based line number to seek to.

Valorile întoarse

Nu este întoarsă nici o valoare.

Erori/Excepții

Throws a LogicException if the line_pos is negative.

Exemple

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();
?>

Exemplul de mai sus va afișa ceva similar cu:

$file->seek(2);

A se vedea și

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User Contributed Notes 1 note

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ahmad_maqsood at waku-2 dot com
2 months ago
A sleek way of counting the number of lines in a file can be like below

$file = new \SplFileObject('file.extension', 'r');
$file->seek(PHP_INT_MAX);

echo $file->key() + 1;
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