if if echo and else echo if if echo and else echo

<?
   $x = 1;
   $y = 1;
   if($x == 1)
   if($y == 1)echo("x=1 and y=1");
   else echo("x!=1");
?>


<?
   $x = 1;
   $y = 1;
   if($x==1)
   {
      if($y==1)echo("x=1 and y=1");
   }
   else echo("x!=1");
?>