moving data within a textarea field to a text file

[gentlemanintraining]

I'm trying to create a form where users can submit information to a database, but one of the forms (a textarea) has to generate a text file. How do I get data within a textarea box to generate a randomly titled text file? I'd also like to know how I can get the file-name of that generated text file, so I can add it to MySQL.

[Daniel0]

[code]<?php
$filename = md5(microtime());
$fp = fopen("files/{$filename}",'w');
fwrite($fp,$_POST['file_contents']);
flclose($fp);

mysql_query("INSERT INTO ......");
?>[/code]