you can break that string with explode or whatever and arange elements as you like
for example
$string = "9-10-03";
$exploded_array = explode("-", $string);
$new_string = $exploded_array[2] ."-". $exploded_array[1] ."-". $exploded_array[0]; // or whatever order you want
INSERT INTO table VALUES ... '". $new_string ."' ...)