Question

I have Adjacency list mode structure like that and i want to count all title of parent like Food = 9, Fruit = 6

For count title using that function

  function display_children($parent, $level) 
     {

    $result = mysql_query('SELECT title FROM tree '.'WHERE parent="'.$parent.'"');

       while ($row = mysql_fetch_array($result))
        {
           $data=  str_repeat(' ',$level).$row['title']."\n";
           echo $data;
           $this->display_children($row['title'], $level+1);
        }   
  }

call function

  display_children('Food',0);

Result

by echo $data; i m getting right result wht i want, but i want to count all like 9

 Fruit Green Peer Red Cherry Yellow Banana Meat Pork

so plz guide how to count all data when i call function

Answer 1

function display_children($parent, $level) 
{

   $result = mysql_query('SELECT title FROM tree '.'WHERE parent="'.$parent.'"');

   $count = 0;
   while ($row = mysql_fetch_array($result))
    {
       $data=  str_repeat(' ',$level).$row['title']."\n";
       echo $data;
       $count += 1 + $this->display_children($row['title'], $level+1);
    }  
    return $count; 
}