SplFileObject::fflush

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

SplFileObject::fflush — Flushes the output to the file

public function SplFileObject::fflush(): bool

Forces a write of all buffered output to the file.

This function has no parameters.

Returns true on success or false on failure.

Example #1 SplFileObject::fflush() example

<?php
$file = new SplFileObject('misc.txt', 'r+');
$file->rewind();
$file->fwrite("Foo");
$file->fflush();
$file->ftruncate($file->ftell());
?>