- var_dump: documentation ( source)
- session_regenerate_id: documentation ( source)
- session_start: documentation ( source)
- session_id: documentation ( source)
- ini_get: documentation ( source)
- is_file: documentation ( source)
<pre><?php
$path = ini_get('session.save_path') . '/sess_';
var_dump($path);
session_start();
// starts session & creates and locks file
var_dump( is_file($path . session_id()) ); // -> TRUE
session_regenerate_id();
// starts new session, but file is not create!
var_dump( is_file($path . session_id()) ); // -> FALSE