La longitud del Array 1 es : 5<br>y<br> La longitud el Array 2 es : 6<br><br>Usamos print_r()<hr>Array
(
    [0] => Roberto
    [1] => Pablo
    [2] => Pepe
    [3] => Pedro
    [4] => Alonso
)
<br>Array
(
    [A1] => Roberto
    [B4] => Pablo
    [3] => Pablo
    [C1] => Pepe
    [H] => Pedro
    [D2] => Alonso
)