public function admin_debit()
{
    $date= date('Y-m-d H:i:s');
    $trans_type=2;
    $amount=$this->input->post('amount');
    $total_amount = array_sum($amount);
    $json=json_encode($_POST);
    $user=$this->session->userdata('sess_pt_userid');
    $data=array(
                   'dated_on'=>$date,
                   'amount'=>$total_amount,
                   'userid'=>$user,
                    'purpose'=>$json,
                    'trans_type'=>$trans_type
                 );
 $response = $this->Petty_model->debit_insert($data);
 //add flash data
         if($response)
         {
           $this->session->set_flashdata('success', 'Cash Debited Successfully ');
           redirect('Petty_controller/debitview');
         }
     else
       {
         $this->session->set_flashdata('error', 'Something worng. Error!!');
         redirect('Petty_controller/debitview');
       }
}

$amount=$this->input->post('amount');
 $total_amount = array_sum($amount);

$total_amount=0;
if($this->input->post('amount') && is_array($this->input->post('amount')){
 $total_amount = array_sum($this->input->post('amount'));
}
$date= date('Y-m-d H:i:s');
$trans_type=2;
$json=json_encode($_POST);
$user=$this->session->userdata('sess_pt_userid');
$data=array(
               'dated_on'=>$date,
               'amount'=>$total_amount,
               'userid'=>$user,
                'purpose'=>$json,
                'trans_type'=>$trans_type
             );
$response = $this->Petty_model->debit_insert($data);