Всегда были проблемы с этим делом, но нужно получить данные из такого массива

Array
(
    [0] => Array
        (
            [b] => Array
                (
                    [type] => halflife
                    [ip] => csfreenet.com.ua
                    [c_port] => 27015
                    [q_port] => 27015
                    [s_port] => 27015
                    [status] => 1
                    [pending] => 0
                )

            [o] => Array
                (
                    [request] => s
                    [id] => 1
                    [zone] => 0
                    [comment] => 
                    [location] => 
                )

            [s] => Array
                (
                    [game] => cstrike
                    [name] => CSFREENET | RESPAWN
                    [map] => de_dust2_2x2
                    [players] => 19
                    [playersmax] => 25
                    [password] => 0
                )

        )

    [1] => Array
        (
            [b] => Array
                (
                    [type] => halflife
                    [ip] => 83.222.115.242
                    [c_port] => 27082
                    [q_port] => 27082
                    [s_port] => 27082
                    [status] => 1
                    [pending] => 0
                )

            [o] => Array
                (
                    [request] => sc
                    [id] => 2
                    [zone] => 0
                    [comment] => 
                    [location] => 
                )

            [s] => Array
                (
                    [game] => cstrike
                    [name] => Zombie Server 4.3 Classic*
                    [map] => zm_mountains_final
                    [players] => 3
                    [playersmax] => 16
                    [password] => 0
                )

        )

а именно получить все значения [map] в этом массиве, как перебрать по порядку ключи ?