Import CSV/Excel data into MYSQL database using codeigniter

Hello Friends,
Today i came across a functionality where i need to import the CSV/Excel file in to MYSQL database via codeigniter. There is a special requirement from client where he can upload the CSV/Excel file in file upload field in HTML form and all data from CSV/Excel must import into MYSQL database table through PHP and remove the duplicates rows of data.But I faced some problems here.
My problems is:
       1.when the user upload the csv file,its enter into the MYSQL database,but it have duplicates data of about 3-4 row.
       2. the data in csv file is about 8000 rows but the data insert in MYSQL db is only about 5000(included the duplicates             data)
       3.this error occur when the file stop import the data
          importcsv_error

this is my view:

Code:

<!-- UPDATE PROCESS'S OUTPUT -->
<div style="display: none;" id="modal3" class="modal hide in" tabindex="-1" role="dialog" aria-hidden="true">
    <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
        <h3 id="myModalLabel">Update Process's Output</h3>
    </div>
<form action="{$path}pro/processupload" method="post" enctype="multipart/form-data" name="form1" id="form1">
<table>
<tr>
<td> Choose your file: </td>
<td><input type="file" class="form-control" name="userfile" id="userfile"  align="center"/>
</td>
<td>
<div class="modal-footer">
<td colspan="2" ><input type="submit" id="submit" name="submit" value="Import"></td>
</div></td></tr></table>
</form>
</div><!-- end add product code-->

 this is my controller

PHP Code:

function processupload()
{
    
    $this->load->model('upload_services');
$data['result']=$this->upload_services->upload_sampledata_csv();
$data['query']=$this-> upload_services->get_car_features_info();
$this->load->view(' Upload_csv ',$data);
} 


and this is my model

PHP Code:

<?php
class Upload_services extends CI_Model
{
function __construct()
{
parent::__construct();
}
function upload_sampledata_csv()
{
    
if(isset($_POST['submit'])){
$fp = fopen($_FILES['userfile']['tmp_name'],'r') or die("can't open file");


while(($line = fgetcsv($fp)) !== FALSE)
{
    
    
 //check whether there are duplicate rows of data in database
                $prevQuery = array(
                                    'articleno'=> $line[0] ,
                                    'product_description' => $line[1] ,
                                    'cust_name' => $line[2] ,
                                    'size' => $line[3] ,
                                    'colour' => $line[4],
                                    'process_description' => $line[5],
                                    'output' => $line[6],
                                    'material_part' => $line[7],
                                    'printingOutput' => $line[8]
                                    
                                    );
                                    
                $q=$this->db->select('sindi_productprocess_temp', $prevQuery)
                            ->where('articleno',$line[0],
                                    'product_description', $line[1] ,
                                    'cust_name' , $line[2] ,
                                    'size', $line[3] ,
                                    'colour' , $line[4],
                                    'process_description' , $line[5],
                                    'output', $line[6],
                                    'material_part', $line[7],
                                    'printingOutput', $line[8]);
                
                $prevResult = $this -> db->query($q);
                
                if($prevResult->num_rows > 0){
                    //update process data
                    
                    $data = array(
                                'articleno' => $line[0] ,
                                    'product_description' => $line[1] ,
                                    'cust_name' => $line[2] ,
                                    'size' => $line[3] ,
                                    'colour' => $line[4],
                                    'process_description' => $line[5],
                                    'output' => $line[6],
                                    'material_part' => $line[7],
                                    'printingOutput' => $line[8]
                                
                                );
                                
                    
                    $this->db->set
                    (
                                    'articleno',$line[0],
                                    'product_description', $line[1] ,
                                    'cust_name' , $line[2] ,
                                    'size', $line[3] ,
                                    'colour' , $line[4],
                                    'process_description' , $line[5],
                                    'output', $line[6],
                                    'material_part', $line[7],
                                    'printingOutput', $line[8]
                    );
                    
                    $this->db-where
                    (
                                    'articleno',$line[0],
                                    'product_description', $line[1] ,
                                    'cust_name' , $line[2] ,
                                    'size', $line[3] ,
                                    'colour' , $line[4],
                                    'process_description' , $line[5],
                                    'output', $line[6],
                                    'material_part', $line[7],
                                    'printingOutput', $line[8]
                    );    
                    
                    $this->db->update('sindi_productprocess_temp');
                    
                    
                }else{
                for($i = 0, $j = count($line); $i < $j; $i++)
            {    
                     $data = array(
                                    'articleno' => $line[0] ,
                                    'product_description' => $line[1] ,
                                    'cust_name' => $line[2] ,
                                    'size' => $line[3] ,
                                    'colour' => $line[4],
                                    'process_description' => $line[5],
                                    'output' => $line[6],
                                    'material_part' => $line[7],
                                    'printingOutput' => $line[8]
                
               );
              
            $data['crane_features']=$this->db->insert('sindi_productprocess_temp', $data);
                }
                 $i++;
            }
}
fclose($fp) or die("can't close file");

}
}
function get_car_features_info()
{
$get_cardetails=$this->db->query("select * from sindi_productprocess_temp");
return $get_cardetails;
}
} 


Can anybody  pls assists me on this?I really need urgent help

Be a pineapple,
stand tall,
wear a crown,
and be sweet,
on the INSIDE.