Use global scope variable in PHP

<?// w ww .j a v  a2 s  .co m
  $capital = "Washington DC";

  function Nation()
  {
    global $capital;
    printCity($capital);
  }

  function printCity($NameOfCity)
  {
    print("The city is $NameOfCity.<br>\n");
  }

  function California()
  {
    $capital = "Sacramento";
    printCity($capital);
  }

  function Utah()
  {
    $capital = "Salt Lake City";
    printCity($capital);
  }

  Nation();
  California();
  Utah();
  Nation();
?>