Returning ID's on insertion & Multiples of 10

[furious5]

Can anyone tell me quick off the top of their heads how I would return the ID of an inserted record?

Also I need to then work out whether it is a multiple of 10?

For this could I do something like:

$i % 10 = $new_number

if($new_number == "10") {
' Create Action
}

My only problem is working out it is a multiple of 10, any ideas?

[laserlight]

[man]mysql_insert_id/man works with mysql.

if ($num % 10 == 0)
	//$num is multiple of 10