error is as under

A PHP Error was encountered
Severity: Notice

Message: Undefined index: name

Filename: views/navigation.php

Line Number: 20


and code on line is

echo anchor("welcome/cat/$topkey",$toplist['name']);


but after making the print_r i found that name is not getting printed actual expectation as per book is

Array
(
[0] = > Array
(
[7] = > Array
(
[name] = > clothes<-----this line not appears in my print_r function.
[children] = > Array
(
[4] = > dresses
[3] = > pants
[2] = > shirts
[1] = > shoes
)
)

= > Array
(
[name] = > fun
[children] = > Array
(
[6] = > games
[5] = > toys
)
)
)
)


and what i get is



Array
(
[0] => Array
(
[2] => Array
(
[children] => Array
(
[7] => clothes
)

)

[7] => Array
(
[children] => Array
(
[3] => pants
[2] => shirts
[1] => shoes
)

)

=> Array
(
[children] => Array
(
=> fun
[6] => games
[5] => toys
)

)

)

)

function getCategoriesNav()
{
$data=array();

$this->db->select('id,name,parentid');

$this->db->where('status','active');

$this->db->order_by('parentid','asc');

$this->db->order_by('name','asc');

$this->db->group_by('parentid,id');

$Q=$this->db->get('categories');

if($Q->num_rows()>0)
{
foreach($Q->result() as $row)
{


if($row->parentid>0)
{
$data[0][$row->parentid]['children'][$row->id]=$row->name;<--this part gives error
}
else
{
$data[0][$row->id]['name']=$row->name;
}
}
}

$Q->free_result();

echo "<pre>";
print_r($data);
echo "</pre>";
return $data;

}