如果不通过CodeIgniter中的Excel工作表退出,如何插入数据库?

I have 3 table to be insert data through excel named employee_details, employee_family_details and employee_policy_member.

In the Excel sheet are field like emp_id, emp_name and family_dob.

I have to first check if emp_id is there in employee_details. If not then insert to employee_details table. Then it has to check if is there any family member there if not then insert to employee_family_details and finally insert to employee_policy_member.

I'm new to CodeIgniter so no idea how to do it.

My View Page

<div class="main-content-inner">
         <form id="first_form"  method="post" enctype="multipart/form-data" action="#">
        <div class="container">
           <div class="row">

              <div class="col-md-5 mt-2">
                 <div class="card">
                    <div class="card-body card-style">
                       <h4 class="header-title color-1 title">
                          Endorsement Request
                          <hr class="dashed-line-40">
                       </h4>

                          <div class="row">
                             <div class="col-md-6">
                                <div class="form-group">
                                   <label class="col-form-label">Employer</label>
                                   <select class="form-control" name="employer" id="employer">
                                      <?php foreach($employer->result() as $emp){ ?>
                       <option value="<?php echo $emp->employer_id; ?>"><?php echo $emp->name; ?></option>
                              <?php } ?>
                                   </select>
                                </div>
                             </div>
                             <div class="col-md-6">
                                <div class="form-group">
                                   <label class="col-form-label">Insurer</label>
                                   <select class="form-control" name="insurer">
                                       <?php foreach($insurer->result() as $ins){ ?>
                       <option value="<?php echo $ins->insurer_id; ?>"><?php echo $ins->ins_co_name; ?></option>
                              <?php } ?>

                                   </select>
                                </div>
                             </div>
                             <div class="col-md-6">
                                <div class="form-group">
                                   <label class="col-form-label">Policy Type</label>
                                   <select class="form-control" name="policy_type">
                                      <?php foreach($policytype->result() as $pct){ ?>
                       <option value="<?php echo $pct->policy_type_id; ?>"><?php echo $pct->policy_name; ?></option>
                              <?php } ?>
                                   </select>
                                </div>
                             </div>
                             <div class="col-md-6">
                                <div class="form-group">
                                   <label class="col-form-label">Policy #</label>
                                   <select class="form-control" name="policy_name">
                                      <option value="GRP9898989">GRP9898989</option>
                                      <option value="GRP9849898"> GRP9849898</option>
                                   </select>
                                </div>
                             </div>
                          </div>

                    </div>
                 </div>
              </div>
              <div class="col-md-7 mt-2">
                 <div class="card">
                    <div class="card-body card-style">
                       <div class="col-md-12">
                          <h4 class="header-title color-1 title">
                             Bulk Upload
                             <hr class="dashed-line-14">
                          </h4>
                          <div class="row">
                             <div class="col-md-8 mt-4">

                                   <div class="input-group">
                                      <div class="custom-file">
                                         <input type="file" name="uploadFile" class="custom-file-input" id="inputGroupFile04">
                                         <label class="custom-file-label" for="inputGroupFile04">Upload Member</label>
                                      </div>
                                   </div>

                             </div>
                             <div class="col-md-3 mt-2">          
                                <button type="button" class="btn color-bl btn-sm mt-3" data-toggle="modal" data-target="#exampleModalCenter">Preview</button>
                             </div>
                          </div>
                          <div class="col-md-12 mt-4">
                             <div class="row" align="center">
                                <div class="col-md-6">
                                   <div class=""> <button type="button" class="btn can-btn btn-md mb-3">Cancel</button></div>
                                </div>
                                <div class="col-md-6">

                                   <input type="submit" id="btnSave" class="btn  btn-md mb-3 sub-btn" style="background-color: #046d66;  color: #fff; !important" value="Submit" />

                                </div>
                             </div>
                          </div>
                       </div>
                       <div class="modal fade" id="exampleModalCenter">
                          <div class="modal-dialog modal-dialog-centered" role="document">
                             <div class="modal-content">
                                <div class="modal-header">
                                   <h5 class="modal-title">Modal title</h5>
                                   <button type="button" class="close" data-dismiss="modal"><span>&times;</span></button>
                                </div>
                                <div class="modal-body">
                                   <p>Lorem, ipsum dolor sit amet consectetur adipisicing elit. Eius voluptates explicabo natus nobis, aperiam placeat aliquid nisi ut exercitationem dolor quisquam nam tempora voluptatem. Unde dignissimos est aliquid quidem porro dolorum ipsam suscipit animi quas, debitis ea, sunt quo distinctio doloribus eveniet dolores tempore delectus voluptatum! Possimus earum asperiores animi.</p>
                                </div>
                                <div class="modal-footer">
                                   <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
                                   <button type="button" class="btn btn-primary">Save changes</button>
                                </div>
                             </div>
                          </div>
                       </div>
                    </div>
                 </div>
              </div>

           </div>
        </div>
        </form>
     </div>

My controller

public function uploadData(){

  if ($this->input->post('policy_name')) {

     // $this->_validate();
            $path = APPPATH .'uploads/';
            require_once APPPATH . "/third_party/PHPExcel.php";
            $config['upload_path'] = $path;
            $config['allowed_types'] = 'xlsx|xls|csv';
            $config['remove_spaces'] = TRUE;
            $this->load->library('upload', $config);
            $this->upload->initialize($config);            
            if (!$this->upload->do_upload('uploadFile')) {
                $error = array('error' => $this->upload->display_errors());
            } else {
                $data = array('upload_data' => $this->upload->data());
            }
            if(empty($error)){
              if (!empty($data['upload_data']['file_name'])) {
                $import_xls_file = $data['upload_data']['file_name'];
            } else {
                $import_xls_file = 0;
            }
            $inputFileName = $path . $import_xls_file;
           // echo $inputFileName;exit;
            try {
                $inputFileType = PHPExcel_IOFactory::identify($inputFileName);
                $objReader = PHPExcel_IOFactory::createReader($inputFileType);
                $objPHPExcel = $objReader->load($inputFileName);
                $allDataInSheet = $objPHPExcel->getActiveSheet()->toArray(null, true, true, true);
                $flag = true;
                $i=0;
                foreach ($allDataInSheet as $value) {
                  if($flag){
                    $flag =false;
                    continue;
                  }

                  $inserdata[$i]['emp_id'] = $value['A'];
                  $inserdata[$i]['emp_name'] = $value['B'];
                  $inserdata[$i]['member_name'] = $value['C'];
                  $inserdata[$i]['family_dob'] = $value['D'];
                  $i++;
                }               
                $result = $this->import->importdata($inserdata);   
                if($result){
                  echo "Imported successfully";
                }else{
                  echo "ERROR !";
                }             

          } catch (Exception $e) {
               die('Error loading file "' . pathinfo($inputFileName, PATHINFO_BASENAME)
                        . '": ' .$e->getMessage());
            }
          }else{
              echo $error['error'];
            }


    }

  }

My Model

public function importData($data) {

        $res = $this->db->insert_batch('employee_policy_member',$data);
        if($res){
            return TRUE;
        }else{
            return FALSE;
        }

    }