Person 1: Array
(
    [name] => Tom
    [job] => Button-Pusher
    [age] => 34
)

Person 2: Array
(
    [name] => John
    [job] => Lever-Puller
    [age] => 41
)

Person 1: Array
(
    [name] => Tom
    [job] => Box-Mover
    [age] => 35
)

Person 2: Array
(
    [name] => John
    [job] => Lever-Puller
    [age] => 42
    [lname] => Smith
)