Question

When navigating through array with next() and prev(), how could you get the current key the array is at?

Answer 1

You can use the key function :

key() returns the index element of the
current array position.

And, as a quick example, you can consider this portion of code :

$array = array(
    'first' => 123,
    'second' => 456,
    'last' => 789, 
);

reset($array);      // Place pointer on the first element
next($array);       // Advance to the second one
$key = key($array); // Get the key of the current (i.e. second) element

var_dump($key);

It’ll output, as expected, the key of the second element :

string 'second' (length=6)