Vim: Indext PHP case and default statements in a switch block

By default, Vim does not indent case and default statements inside of a switch block in a PHP file:

switch ($foo) {
case 'bar':
    // do something
    break;
}

It turns out a single line in one’s vimrc can fix that:

let g:PHP_vintage_case_default_indent = 1

Now indenting is correct:

switch ($foo) {
    case 'bar':
        // do something
        break;
}