Question

Is it possible to get the array key name this way?

$array = ("first" => 1);

function f($object)
{
echo(???); //should give first
}

f($array['first']);

Answer 1

It’s not possible if you pass only the value into the function like f($object['first']), the key name has no relation to the passed value in that case.

You need to pass the entire array (f($array)) and use:

echo key($object);