fflush
Description
Flushes the output to a file
Syntax
fflush ( resource $handle ) : bool
Parameters
handleThe file pointer must be valid, and must point to a file successfully opened by fopen() or fsockopen() (and not yet closed by fclose()).
Return
Returns TRUE on success or FALSE on failure.
Examples
1
<?
$filename = $_SERVER['DOCUMENT_ROOT'] . '/assets/txt/file.txt';
$mode = 'r+';
$handle = fopen($filename, $mode);
$contents = fread($handle, filesize($filename));
rewind($handle);
fwrite($handle, $contents);
rewind($handle);
$contents = fread($handle, filesize($filename));
echo "fwrite without fflush: $contents" . PHP_EOL;
rewind($handle);
fwrite($handle, $contents);
fflush($handle);
rewind($handle);
$contents = fread($handle, filesize($filename));
echo "fwrite with fflush: $contents";
fclose($handle);
?>fwrite without fflush: Hello fwrite with fflush: Hello
