4.3

<?php
 function konversi($uang, $matauang)
  {
   switch ($matauang) {
    case 1:
     $hasil = $uang/12000;
     $mata = "Dollar Amerika";
     break;
    case 2:
     $hasil = $uang/7000;
     $mata = "Dollar Singapura";
     break;
    case 3:
     $hasil = $uang/4000;
     $mata = "Yen";
     break;
    case 4:
     $hasil = $uang/11;
     $mata = "Won";
     break;
    default:
     $hasil = $uang;
     $mata = "Rupiah";
     break;
   }
   $hasil = round($hasil);
   echo "<center>
Rp. $uang - $hasil $mata</center>
";
}
?>