Lücken nach unset()

Array
(
    [0] => Mia
    [1] => Luca
    [3] => Emma
    [5] => Léa
)

Array
(
    [0] => Mia
    [1] => Luca
    [2] => Emma
    [3] => Léa
)

1. Mia
2. Luca
3. Emma
4. Léa