[DarkDeviL]

mysql_query (and related mysql_ functions) have been deprecated, and won't be there in PHP 7+, so you might want to switch it out to either MySQLi or PDO, to ensure compatibility, in the event that you should ever decide to come out of the stone age.

To grab the "new" ID from auto increment rows, you can use the following:

MySQLi: mixed $mysqli->insert_id;
PDO: public string PDO::lastInsertId ([ string $name = NULL ] )
Legacy stone age functions: int mysql_insert_id ([ resource $link_identifier = NULL ] )