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fdatasync

(PHP 8 >= 8.1.0)

fdatasync — Synchronizes data (but not meta-data) to the file

Descrizione

fdatasync(resource $stream): bool

This function synchronizes stream contents to storage media, just like fsync() does, but it does not synchronize file meta-data. Note that this function is only effectively different in POSIX systems. In Windows, this function is aliased to fsync().

Elenco dei parametri

stream

Il puntatore al file deve essere valido, e deve puntare ad un file aperto con successo da fopen() o fsockopen() (e non ancora chiuso da fclose()).

Valori restituiti

Restituisce true in caso di successo, false in caso di fallimento.

Esempi

Example #1 fdatasync() example

<?php

$file = 'test.txt';

$stream = fopen($file, 'w');
fwrite($stream, 'test data');
fwrite($stream, "\r\n");
fwrite($stream, 'additional data');

fdatasync($stream);
fclose($stream);
?>

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