SplFileObject::seek

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

SplFileObject::seekSeek to specified line

Descrizione

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

Seek to specified line in the file.

Elenco dei parametri

line

The zero-based line number to seek to.

Valori restituiti

Nessun valore viene restituito.

Errori/Eccezioni

Throws a LogicException if the line is negative.

Esempi

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();
?>

Il precedente esempio visualizzerĂ  qualcosa simile a:

$file->seek(2);

Vedere anche:

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User Contributed Notes 1 note

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3
ahmad_maqsood at waku-2 dot com
5 years 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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