Database Treemenu Help

programming
1

I need to get this from pulling data from a directory to generating it from a Database.

my Database: tbl_tree_menu

treeview_id | treeview_name | treeview_desc | treeview_parent_id

    1        |        root       |       folder       |              0

   2         |    1. Parent    |       folder       |              1

   3         |    2. Parent    |       folder       |              1

   4         |    1. Child P1  |       folder       |              2

   5         |    2. Child P1  |       folder       |              2

   6         |  My Doc PC1   |     document   |              4

<?php
$_POST['dir'] = urldecode($_POST['dir']);
if( file_exists($root . $_POST['dir']) ) {
 $files = scandir($root . $_POST['dir']);
 natcasesort($files);
 if( count($files) > 2 ) { /* The 2 accounts for . and .. */
  echo "<ul class=\"jqueryFileTree\" style=\"display: none;\">";
  // All dirs
  foreach( $files as $file ) {
   if( file_exists($root . $_POST['dir'] . $file) && $file != '.' && $file != '..' && is_dir($root . $_POST['dir'] . $file) ) {
    echo "<li class=\"directory collapsed\"><a href=\"#\" rel=\"" . htmlentities($_POST['dir'] . $file) . "/\">" . htmlentities($file) . "</a></li>";
   }
  }
  // All files
  foreach( $files as $file ) {
   if( file_exists($root . $_POST['dir'] . $file) && $file != '.' && $file != '..' && !is_dir($root . $_POST['dir'] . $file) ) {
    $ext = preg_replace('/^.*\./', '', $file);
    echo "<li class=\"file ext_$ext\"><a href=\"#\" id=\"1\" rel=\"" . htmlentities($_POST['dir'] . $file) . "\">" . htmlentities($file) . "</a></li>";
   }
  }
  echo "</ul>"; 
 }
}
?>