array conversion in php

Question

how would you convert this array:

Array
(
    [0] => Array
        (
            [Contact] => Array
                (
                    [number] => 0425 234 634
                )

        )

    [1] => Array
        (
            [Contact] => Array
                (
                    [number] => 2939 492 235
                )

        )

)

into this array

Array
(
    [0] => 0425 234 634
    [1] => 2939 492 235
)

?

Answer 1

See Set::extract() It uses xpath notation to extract node values from paths in arrays.

$numbers = Set::extract('/Contact/number', $numbers);

Achieve all this in 1 line in far more understandable code than other examples suggested here.