在其sub_arrays中拆分多维数组

Question

I have just had this issue. I have a multidimensional array ($varianti) that looks like this:

Array
(
    [pa_taglia] => Array
        (
            [0] => l
            [1] => m
        )

    [pa_colore] => Array
        (
            [0] => blu
            [1] => giallo
            [2] => rosso
        )

)

What I need is to get different arrays for each sub array so I need this result:

Array
(
    [0] => l
    [1] => m
)
Array
(
    [0] => blu
    [1] => giallo
    [2] => rosso
)

The main problem is that I can get as many sub-arrays as needed (this is for my Woocommerce plugin to create product_variations from attributes) so it needs to be flexible.

This is the code I came up with (after 2 hours...):

$keys = array_keys($varianti);//get the main keys

        //split multidimensional array in sub arrays
        foreach ($keys as $key=>$val){          
            $nr_var[$val]= count($varianti[$keys[$key]]);//create array such as array('key1'=> qty1, 'key2'=> qty2);
            $$val = $varianti[$keys[$key]];//create a variable variable from key
        }
        print_r($nr_var);
        foreach ($nr_var as $chiave=>$valore){
            print_r($$chiave);//retrieve values calling variable variable
        }

I hope this may be of help to anyone.

Answer 1

You can use extract function which will automatically create new variables basing on the key values:

extract($varianti);
var_dump($pa_colore);