PHP Server Side Scripting Forum

<?
...
header('length, type...')
readfile('file-to-download.dat');

//the following script should be executed after the whole file downloaded completely.
mail('my@email.com', 'Download completed', 'body', 'from: my@email.com');
?>

It works without any problem. The readfile function shows the "File download" dialog of IE and I won't receive email until IE downloaded the whole file.

However, I found that I need to use session in this script, so I added session_start() at the beginning of this it:

<?
session_start()
...
?>