PHP smarty submenu

Here are the code
The PHP code is:
$menu=array();
$query="SELECT * FROM domenii WHERE parentid=0";
$resursa=$obj->query($query);
while($row=$obj->fetcharray($resursa)){
$query1="SELECT * FROM domenii WHERE parentid=".$row['id'];
$resursa1=$obj->query($query1);
if($obj->numrows($resursa1)>0){
$submenu=array();
while($row1=$obj->fetcharray($resursa1)){
$submenu[]=array('type'=>$row1['type'],
'id'=>$row1['id'],
'nume'=>$row1['nume'],
'title'=>str_replace(' ','-', $row1['nume']));
}
}else{$submenu='0';}

$menu[]=array('type'=>$row['type'],
'id'=>$row['id'],
'nume'=>$row['nume'],
'title'=>str_replace(' ','-', $row['nume']),
'submenu'=>$submenu);
}

$obj->assign('menu', $menu);

The HTML (with smarty) code:

{section name=i loop=$menu}

• {$menu[i].nume}
  {if is_array($menu[i].submenu)}
  
  
  {section name=j loop=$menu[i].submenu}
  
  • {$menu[i].submenu[j].nume}
  
  {/section}
  
  
  {/if}
  

{/section}

Compact it like this:

['main_link1'] => Array (
['key1'] => value
['key2'] => value
['submenus'] => Array (
['sublink1'] => Array ()
['sublink2'] => Array ()
)
['main_link2'] => Array (
['key1'] => value
['key2'] => value
['submenus'] => Array (
['sublink1'] => Array ()
['sublink2'] => Array ()
)