array(2) {
  [0]=>
  string(3) "Ray"
  [1]=>
  string(4) "Pren"
}
New hires:<br>
Ray, Pren<br>
array(3) {
  [0]=>
  string(4) "Mike"
  [1]=>
  string(4) "Anne"
  [2]=>
  string(4) "Joel"
}
Employees:<br>
array(4) {
  [0]=>
  string(3) "Ray"
  [1]=>
  string(4) "Pren"
  [2]=>
  string(4) "Fred"
  [3]=>
  string(3) "Amy"
}
New Hires:<br>
---- After splicing ----<br>
array(6) {
  [0]=>
  string(4) "Mike"
  [1]=>
  string(4) "Anne"
  [2]=>
  string(3) "Ray"
  [3]=>
  string(4) "Pren"
  [4]=>
  string(4) "Fred"
  [5]=>
  string(3) "Amy"
}
Employees:<br>
array(4) {
  [0]=>
  string(3) "Ray"
  [1]=>
  string(4) "Pren"
  [2]=>
  string(4) "Fred"
  [3]=>
  string(3) "Amy"
}
New hires:<br>
Mike, Anne, Ray, Pren, Fred, Amy