array to sort

sort by val

array(79) {
  ["donald duck[-|-]1"]=>
  array(2) {
    ["usertype"]=>
    string(3) "reg"
    ["val"]=>
    float(137.04)
  }
  ["mickey mouse[-|-]2"]=>
  array(2) {
    ["usertype"]=>
    string(3) "reg"
    ["val"]=>
    float(75.25)
  }
  ...
}