Dfyjkt

I created two tables such as 'iv_mail' and 'iv_mail_subfeatures'.the first table 'iv_mail' included fields as name, email, phone, feature name etc and 'iv_mail_subfeatures' has subfeatures of each feature, I put a query using get values from two tables. actually, I need subfeatures of corresponding features. shown below I used this query,
model

 public function getmailfeatures($id)

$this->db->where('id',$id);
$query = $this->db->get('iv_mail'); 
$return=array();
foreach($query->result() as $getlist)
 
 $return[$getlist->id]=$getlist;
 $subfeature_id= explode(',',$getlist->featurename);
 foreach($subfeature_id as $subfea)
 
 $feature_id=substr($subfea,0,1);
 $return[$getlist->id]->subfeatures=$this->get_sub_features($id);
 
 
 return $return;


public function get_sub_features($id)

 $this->db->select('*');
 $this->db->where('customer_id',$id);
 $query = $this->db->get('iv_mail_subfeatures'); 
 return $query->result(); 

controller

 public function maildetails()

 $id=$this->uri->segment(3);
 $data['featuresdetails']=$this->Feature_model->getmailfeatures($id);

 $this->load->view('admin/mail/mail_details',$data);

view

<p>Features</p>
 <?php 
 foreach($featuresdetails as $feature)
 
 echo $feature->featurename ;

 foreach($feature->subfeatures as $sub)
 
 $new_array = objectToArray($sub);
 echo"<pre>";
 print_r( $new_array);
 foreach( $new_array as $new)
 




 




 
 

 ?>

it will be getting two Arrays I can't print the values anyone can help me

(
[0] => Array
 (
 [id] => 1
 [feature_id] => 1
 [customer_id] => 1
 [subfeaturename] => 1_a/c
 )

[1] => Array
 (
 [id] => 2
 [feature_id] => 1
 [customer_id] => 1
 [subfeaturename] => 1_non a/c
 )

[2] => Array
 (
 [id] => 3
 [feature_id] => 2
 [customer_id] => 1
 [subfeaturename] => 2_surya caters
 )

[3] => Array
 (
 [id] => 4
 [feature_id] => 2
 [customer_id] => 1
 [subfeaturename] => 2_test caters
 )

[4] => Array
 (
 [id] => 5
 [feature_id] => 2
 [customer_id] => 1
 [subfeaturename] => 2_dd caters
 ))
Array

(
[0] => Array
(
[id] => 1
[feature_id] => 1
[customer_id] => 1
[subfeaturename] => 1_a/c
)

[1] => Array
 (
 [id] => 2
 [feature_id] => 1
 [customer_id] => 1
 [subfeaturename] => 1_non a/c
 )

[2] => Array
 (
 [id] => 3
 [feature_id] => 2
 [customer_id] => 1
 [subfeaturename] => 2_surya caters
 )

[3] => Array
 (
 [id] => 4
 [feature_id] => 2
 [customer_id] => 1
 [subfeaturename] => 2_test caters
 )

[4] => Array
 (
 [id] => 5
 [feature_id] => 2
 [customer_id] => 1
 [subfeaturename] => 2_dd caters
 )

)