fdatasync

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

&reftitle.description; `bool` `fdatasync` `resource` `stream`

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`.

&reftitle.parameters;

`stream`

- &fs.validfp.all;
&reftitle.returnvalues;

&return.success;

&reftitle.examples;

### `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);
    ?>

&reftitle.seealso;

- `fflush`
- `fsync`