.xls文件在服务器上传，但不是.xlsx文件格式

Question

此代码在导入.xls文件时工作正常..但是当我们上传.xlsx时，它会显示一些错误，例如＆＃34;名称不可读＆＃34; ..任何人都可以告诉一些解决方案来解决这个问题吗？ ？

这是我的代码......

include("includes/config.php"); 
    if ($_POST['frmSubmit']) {
        $fileName = $_FILES['frmUpload']['tmp_name'];
        if ($fileName) {
            $data = new Spreadsheet_Excel_Reader();
            $data->read($fileName);
            $strDatas = $data->sheets[0]['numRows'];
            $strDataCount = 0;
            $strInsertRecords = 0;
            $strDuplicationRecords = 0;

            for($k=2; $k<=$strDatas; $k++) { 
                $strData = $data->sheets[0]['cells'][$k];
                $strTableColumn = count($strData);

                if ($strTableColumn == 7) {
                    $strStatus = doCheckDuplication($strData['3']);
                    if ($strStatus == 0) {
                        doInsertEmployeeDetails($strData[1], $strData[2], $strData[3], $strData[4], $strData[5], $strData[6], $strData[7]);
                        $strInsertRecords++;
                    } else {
                        $strDuplicationRecords++;
                    }
                        $strDataCount++;

                    if  ($strDataCount == $strInsertRecords) {
                        $strMessage = 'Employee record(s) inserted successfully!';                                                                  
                        $strClass = 'Success';
                    }
                    if  ($strDataCount != $strInsertRecords) {
                        $strMessage = 'Employee record(s) inserted successfully but some of record(s) are already exists.!';                                                                    
                        $strClass = 'Error';
                    }
                    if  ($strDataCount == $strDuplicationRecords) {
                        $strMessage = 'Employee record(s) are already exists.!';                                                                    
                        $strClass = 'Error';
                    }
                } else {
                    $strMessage = 'Column mis-match, Please verify the file.';                                                                  
                    $strClass = 'Error';
                }
            }   
        } else {
            $strMessage = 'Please upload a valid file.';                                                                    
            $strClass = 'Error';
        }
    }