// /* */ 

 function myFunction($arg){if($arg==5){print "Hello 5";}{elseif($arg==4){print "Hello 4";}else{print "I don't know you";}}myFunction(5);

  vs.

  function myFunction($arg) {
    if($arg==5) {
      print "Hello 5";
    } elseif($arg==4) {
      print "Hello 4";
    } else {
      print "I don't know you";
    }
  }
  myFunction(5);