Does not flush st_atime, st_mtime or st_size.
If you need to use filesize after a write you will need need fsync() or fflush() instead.
(PHP 8 >= 8.1.0)
fdatasync — Synchronizes data (but not meta-data) to the file
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().
streamDosya tanıtıcısı geçerli olmalı ve fopen() veya fsockopen() tarafından başarıyla açılmış bir dosya için döndürülmüş olmalıdır (ve henüz fclose() tarafından kapatılmamış olmalıdır).
Örnek 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);
?>Does not flush st_atime, st_mtime or st_size.
If you need to use filesize after a write you will need need fsync() or fflush() instead.