fflush
PHP function
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(PHP 4 >= 4.0.1, PHP 5, PHP 7, PHP 8)
Flushes the output to a file
Description
fflush(resource $stream): bool
This function forces a write of all buffered output to the resource pointed to by the file stream.
Parameters
streamAll
Return Values
Success
Examples
File write example using fflush()
php
<?php
$filename = 'bar.txt';
$file = fopen($filename, 'r+');
rewind($file);
fwrite($file, 'Foo');
fflush($file);
ftruncate($file, ftell($file));
fclose($file);
?>