integer last_id(string table [, string serial_column])
<?php
require_once("fasdab.mysql.php");
$db = new Fasdab("localhost", "username", "password", "database");
$db->query("INSERT INTO users ( first_name ) VALUES ( 'John' )");
echo "John's user ID is ".$db->last_id("users", "id")."<br/>\n";
?>