php fflush function_PHP tutorial

php fflush function ​

ffflush
(PHP 4" = 4.0.1, PHP 5)

fflush - Flushes output to a file

Description
boolean fflush (resource$process)
This function forces writing of all buffered output to the file handle pointed to by the resource.

Parameters

Handle
The file pointer must be valid and must point to a file successfully opened by fopen() or fsockopen() (and not yet closed by fclose()).


Return value
Returns TRUE or FALSE on success or failure.

Example

For example, to write file No. 1, use fflush ( ),

$filename = 'bar.txt';

$file = fopen($filename, 'r+');
rewind($file);
fwrite($file, 'Foo');
fflush($file);
ftruncate($file, ftell($file));
fclose($file);
?>