fdatasync

(PHP 8 >= 8.1.0)

fdatasyncSynchronizes 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);
?>

Vedere anche:

  • fflush() - Invia l'output in un file
  • fsync() - Synchronizes changes to the file (including meta-data)

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