CI excel read data

view.php

<?php
                    if (!class_exists('PHPExcel')) return false;
                    $directory = "./excel/";
                    $files = glob($directory . "*");
                   
                    foreach ($files as $filesName) 
                    {                     
                      $inputFileName = $filesName;

                      $row_callback=null;
                          try {

                              $inputFileType = PHPExcel_IOFactory::identify($inputFileName);
                              $objReader = PHPExcel_IOFactory::createReader($inputFileType);
                              $objPHPExcel = $objReader->load($inputFileName);
                          } catch(Exception $e) {
                              return ('Error loading file "'.pathinfo($inputFileName,PATHINFO_BASENAME).'": '.$e->getMessage());
                          }
                          $sheet = $objPHPExcel->getSheet(0); 
                          $highestRow = $sheet->getHighestRow(); 
                          $highestColumn = $sheet->getHighestColumn();
                          $keys = array();
                          $results = array();
                          if(is_callable($row_callback)){

                              for ($row = 1; $row <= $highestRow; $row++){ 
                                  $rowData = $sheet->rangeToArray('A' . $row . ':' . $highestColumn . $row,null,true,false);
                                  if ($row === 1){
                                      $keys = $rowData[0];
                                  } else {

                                      $record = array();
                                      foreach($rowData[0] as $pos=>$value) $record[$keys[$pos]] = $value; 
                                      $row_callback($record);           
                                  }
                              } 
                          } else {    

                              for ($row = 1; $row <= $highestRow; $row++){ 
                                  $rowData = $sheet->rangeToArray('A' . $row . ':' . $highestColumn . $row,null,true,false);
                                  if ($row === 1){
                                      $keys = $rowData[0];
                                  } else {
                                      $record = array();
                                      foreach($rowData[0] as $pos=>$value) 

                                        $record[$keys[$pos]] = $value; 
                                        $results[] = $record;      

                                  }
                              }
                          } 
                      }                       
                    ?>