fdatasync
(PHP 8 >= 8.1.0)
fdatasync — Synchronizes data (but not meta-data) to the file
Description
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().
Parameters
-
stream
-
The file pointer must be valid, and must point to a file successfully opened by fopen() or fsockopen() (and not yet closed by fclose()).
Return Values
Returns true
on success or false
on failure.
Examples
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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https://www.php.net/manual/en/function.fdatasync.php