How to align the arrow when not all have key-value pair? Follow

I know that it is possible to align key value in an Array,

$array = array(
   1    => 'a',
   "1"  => "b",
   1.5  => "c",
   true => "d",
   '1'  => "e",
);

But ... is it possible to align a mixed Array?, for example:

$array - array(
"a",
"b",
6 => "c",
"d'd",
);