Dynamically accessing multidimensional array value

Question

I\'m trying to find (or create) a function. I have a multidimensional array:

$data_arr = [
    \"a\" => [
        \"aa\" => \"abfoo\",
        \"ab\"          


        

Answer 1

Wanted to post an even more elegant solution: array_reduce

    $data_arr = [
        "a" => [
            ...
            "ab" => [
                ...
                "abc" => "abcfoo"
            ],
            ...
        ],
        ...
    ];

    $result = array_reduce(["a", "ab", "abc"], function($a, $b) {
        return $a[$b];
    }, $data_arr);

    // returns "abcfoo"

I've been using Javascript's Array.reduce() a lot lately in updating some legacy code to ES6:

JS:
const data_obj = {...};
let result = ['a','ab','abc'].reduce((a, b) => a[b], data_obj);