Aki ta..
<?php
$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
if (!$link) {
die('Could not connect: ' . mysql_error());
}
mysql_select_db('mydb');
mysql_query("INSERT INTO mytable (product) values ('kossu')");
printf("Last inserted record has id %d\n", mysql_insert_id());
?>
http://ve.php.net/mysql_insert_id
mysql_insert_id — Get the ID generated from the previous INSERT operation
Description
int
mysql_insert_id ([ resource $link_identifier ] )
Retrieves the ID generated for an AUTO_INCREMENT column by the previous INSERT query.