[MySQL][PHP]Wyświetlaneie danych z bazy Opcje

[php11]

Cześć,

pobieram dane z bazy, print_r wyświetla mi

[PHP] pobierz, plaintext 
Array(
        ([0] = Array(([0] = (3)[1] = 15))
	 [1] = Array(([0] = (3)[1] = 16))
	 [2] = Array(([0] = (3)[1] = 17))
	 [3] = Array(([0] = (9)[1] = 20))
	 [4] = Array(([0] = (9)[1] = 21))
	 [7] = Array(([0] = (9)[1] = 22))
	 [8] = Array(([0] = (9)[1] = 28))
	 [9] = Array(([0] = (9)[1] = 25)))
);
[PHP] pobierz, plaintext 

Nie wiem, jak napisać foreach, bym otrzymał dwie tablice:
$tablica3 = (15, 16, 17);
$tablica9 = (20, 21, 22, 28, 25);

Dzięki za pomoc