Indentation Like binary tree

Hello friends,
I am developing MLM site and using this php code for traversal

<?
$connection = mysql_connect("localhost", "root", "");
    $database = mysql_select_db("chek", $connection);
?>
   <?php  

function display_tree($root) {  
 
   // retrieve the left and right value of the $root node  
   $result = mysql_query('SELECT lft, rgt FROM mptt '.  
                          'WHERE title="'.$root.'";');  
   $row = mysql_fetch_array($result);  
 
   // start with an empty $right stack  
   $right = array();  
 
   // now, retrieve all descendants of the $root node  
   $result = mysql_query('SELECT title, lft, rgt FROM mptt '.  
                          'WHERE lft BETWEEN '.$row['lft'].' AND '.  
                          $row['rgt'].' ORDER BY lft ASC;');  
 
   // display each row  
   while ($row = mysql_fetch_array($result)) {  
       // only check stack if there is one  
       if (count($right)>0) {  
           // check if we should remove a node from the stack  
           while ($right[count($right)-1]<$row['rgt']) {  
               array_pop($right);  
           }  
       }  
       // display indented node title  
       echo "<span style=color:red;>".str_repeat('&nbsp;',count($right)).count($right).$row['title']."\n<span>";  
 
       // add this node to the stack  
       $right[] = $row['rgt']; 

   }
 
   
}  
display_tree(food);
?>

PHP:

The output is in this format:
Food
Fruit
Red
Cherry
Strawberry
Yellow
Banana
Meat
Beef
Pork

I want to show it like:


Please help me ....
Thank u ...