function order($a) {

 $len = count($a);  for($i = 0; $i <= $len; $i++) {   for($j = $len-1; $j > $i; $j--) {    echo '【' , $i , '】';    echo "<hr />";    echo $j;    echo '';    if($a[$j] > $a[$j-1]) {     echo "++";     $x = $a[$j];     $a[$j] = $a[$j-1];     $a[$j-1] = $x;    }   }  }  return $a; }

$a = array(11,34,2,10,56,78,100,3,6);

print_r(order($a));