Php array from set of keys

Question

Found this post that helped me out: Split a string to form multidimensional array keys?

Anyhow that works like a charm when it comes to string values, but if array keys

Answer 1

Solution

Here's the function that does the magic:

function constructArray( &$array_ptr, $keys, $value )
    {
        // extract the last key
        $last_key = array_pop ( $keys );

        foreach ( $keys as $arr_key )
        {
             unset($keys[$arr_key]);
             if ( !array_key_exists ( strval($arr_key), $array_ptr ) )
            {
                $array_ptr[ strval($arr_key) ] = array ( );
            }
            $array_ptr = &$array_ptr[ strval($arr_key) ];
        }

        // set the final key
        $array_ptr[ $last_key ] = $value;
    }

Usage:

$keys = array('variable_data', '0', 'var_desc');
$clean_arr = array();
constructArray($clean_arr, $keys, 'asd');

// Output
Array
(
    [variable_data] => Array
        (
            [0] => Array
                (
                    [var_desc] => asd
                )

        )

)