$stack = array("yellow", "red", "green", "orange", "purple");
// delete the last element of an array
$removed = array_pop($stack);
print_r($stack);
$new = array_slice($old, -1)
$a5 = array_slice($arr, -5);
if(empty($transport[count($transport)-1])) {
unset($transport[count($transport)-1]);
}
array_pop()