Get key of the last element in an array

Question

Hay, i have an array which contains a set of arrays, here's an example.

array(
    [0]=>array('name'=>'bob'),
    [2]=>array('name'=>'tom'),
    [3]=array('name'=>'mark')
)

How would i get the last item in the array, and returns it's key.

So in the above example it would return 3.

Answer 1

end($array);
echo key($array)

This should return the key of the last element.

Answer 2

Try $lastKey = end(array_keys($array));

Answer 3

<?php
$a = array(
    0=>array('name'=>'bob'),
    2=>array('name'=>'tom'),
    3=>array('name'=>'mark')
);


$b = array_keys($a);
echo end($b);

?>

something like this

Answer 4

Another option:

$last_key = key(array_slice($array, -1, true));