(PHP 5 >= 5.1.0, PHP 7, PHP 8)
SplFileObject::fflush — Flushes the output to the file
This function has no parameters.
Example #1 SplFileObject::fflush() example
<?php$file = new SplFileObject('misc.txt', 'r+');$file->rewind();$file->fwrite("Foo");$file->fflush();$file->ftruncate($file->ftell());?>