PHP返回数组键

Question

我有一个数组美食像:

Array
(
    [apple] => Array
        (
            [color] => red
            [type] => fruit
        )

    [choco] => Array
        (
            [color] => brown
            [type] => candy
        )

)

有功能我可以做:

get_key($ food,0)它将返回索引0,apple

get_key($ food,1)返回choco

Answer 1

你可以这样做 :

$keys = array_keys($array);

echo $keys[0];
echo $keys[1];

Answer 2

function get_key($array, $index) {
    $allItems = array_keys($array);
    $selectedItem = $allItems[$index];
    return $selectedItem;
}