PHP last_key()

개요

$fruits = ['apple','banana','cranberry'];
end($fruits);
$last_key = key($fruits);
var_dump( $last_key ); # int(2)

function last_key($arr) {
	end($arr);
	return key($arr);
}
$fruits = ['apple','banana','cranberry'];
var_dump( last_key($fruits) ); # int(2)