PHPExcel导出问题

在利用PHPExcel类做导出时出现了几个错误 。。求大神指导
第一个问题：Warning: Set the ini directive 'precision' without permission in Classes/PHPExcel/Calculation.php on line 1697
第二个问题：Fatal error: Class 'XMLWriter' not found in Classes/PHPExcel/Shared/XMLWriter.php on line 44

回复讨论(解决方案)

贴出你的相关代码

上回的问题解决了，现在又出现了点新问题。
//引入所需的文件
ob_end_clean();
header("Content-type: text/html;charset=utf-8");
require_once '../../Classes/PHPExcel.php';
require_once '../../Classes/PHPExcel/Writer/Excel2007.php';
require_once '../../Classes/PHPExcel/Writer/Excel5.php';
    include_once '../../Classes/PHPExcel/IOFactory.php';  
//创建一个处理对象的实例
$objExcel = new PHPExcel();

//设置基本属性
$objExcel->getProperties()->setCreator("Kemper_Diao");
$objExcel->getProperties()->setLastModifiedBy("Kemper_Diao");
$objExcel->getProperties()->setTitle("Office 2007 XLSX");
$objExcel->getProperties()->setSubject("Office 2007 XLSX");
$objExcel->getProperties()->setDescription("Document for Office 2007 XLSX, generated using PHP classes.");
$objExcel->getProperties()->setKeywords("office php");
$objExcel->getProperties()->setCategory("Excel2007 Output");

//开始处理数据，索引从0开始
$objExcel->setActiveSheetIndex(0);

//设置表头
$objExcel->getActiveSheet()->mergeCells('A1:K1');
$objExcel->getActiveSheet()->getStyle('A1')->getAlignment()->setVertical(PHPExcel_Style_Alignment::VERTICAL_CENTER);
$objExcel->getActiveSheet()->getStyle('A1')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objExcel->getActiveSheet()->getStyle('A1')->getFont()->setName('Candara');
    $objExcel->getActiveSheet()->getStyle('A1')->getFont()->setSize(16);
    $objExcel->getActiveSheet()->getStyle('A1')->getFont()->setBold(true);
$objExcel->getActiveSheet()->setCellValue('A1',"供应商Excel导出表");

//字段名
$objExcel->getActiveSheet()->setCellValue('A2', "ID");
$objExcel->getActiveSheet()->setCellValue('B2', "供应商名称");
$objExcel->getActiveSheet()->setCellValue('C2', "投标项目");
$objExcel->getActiveSheet()->setCellValue('D2', "供应品牌");
$objExcel->getActiveSheet()->setCellValue('E2', "供应商地址");
$objExcel->getActiveSheet()->setCellValue('F2', "供应商资质");
$objExcel->getActiveSheet()->setCellValue('G2', "联系人");
$objExcel->getActiveSheet()->setCellValue('H2', "联系电话");
$objExcel->getActiveSheet()->setCellValue('I2', "其它联系方式");
$objExcel->getActiveSheet()->setCellValue('J2', "合作记录");
$objExcel->getActiveSheet()->setCellValue('K2', "最近业绩");

//供应商导出传递参数操作
$projectID = $_POST['projectid'];

//数据库操作
try{
$pdo_db = new PDO("mysql:host=localhost;dbname=test","RASuser","remote");
$pdo_db->query("set names gbk;");
$result = $pdo_db->query("SELECT * FROM table_suppliercheck WHERE ProjectID=".$projectID);
}catch(PDOException $e){
exit("Connection error：".$e->getMessage());
}
$i = 3;
foreach($result as $row){
//写入内容
$objExcel->getActiveSheet()->setCellValue('A'.$i, iconv("gbk","utf-8","$row[ID]"));
$objExcel->getActiveSheet()->setCellValue('B'.$i, iconv("gbk","utf-8","$row[SupplierName]"));
$objExcel->getActiveSheet()->setCellValue('C'.$i, iconv("gbk","utf-8","$row[ProjectName]"));
$objExcel->getActiveSheet()->setCellValue('D'.$i, iconv("gbk","utf-8","$row[SupplierBrand]"));
$objExcel->getActiveSheet()->setCellValue('E'.$i, iconv("gbk","utf-8","$row[SupplierAddress]"));
$objExcel->getActiveSheet()->setCellValue('F'.$i, iconv("gbk","utf-8","$row[SupplierAptitude]"));
$objExcel->getActiveSheet()->setCellValue('G'.$i, iconv("gbk","utf-8","$row[LinkMan]"));
$objExcel->getActiveSheet()->setCellValue('H'.$i, iconv("gbk","utf-8","$row[LinkPhone]"));
$objExcel->getActiveSheet()->setCellValue('I'.$i, iconv("gbk","utf-8","$row[LinkOther]"));
$objExcel->getActiveSheet()->setCellValue('J'.$i, iconv("gbk","utf-8","$row[LastResult]"));
$objExcel->getActiveSheet()->setCellValue('K'.$i, iconv("gbk","utf-8","$row[CooperationRecord]"));
$i++;
}
//重命名表名
$objExcel->getActiveSheet()->setTitle("供应商");
$objExcel->setActiveSheetIndex(0);

//找出项目名作为表名
$name = $pdo_db->query("SELECT TenderTitle FROM table_tendermessage WHERE ID=".$projectID)->fetch();
$filename = $name['TenderTitle'];

//保存为Excel2003
header('Content-Type: application/vnd.ms-excel');
header('Content-Disposition: attachment;filename='.$filename.'.xls');
header('Cache-Control: max-age=0');
$objWriter = PHPExcel_IOFactory::createWriter($objExcel, 'Excel5');
$objWriter->save('php://output');
exit;

?>
这次提示什么OLE.PHP文件出错是什么回事？

这个问题也解决了，原来是时区的设置问题啊。
网上看了下三种时区设置方法：
1.在页头使用date_default_timezone_set()设置 date_default_timezone_set('PRC'); //东八时区 echo date('Y-m-d H:i:s');
2.在页头使用 ini_set('date.timezone','Asia/Chongqing');
3.修改php.ini。打开php5.ini查找date.timezone 去掉前面的分号修改成为：date.timezone =PRC

第二个问题：Fatal error: Class 'XMLWriter' not found in Classes/PHPExcel/Shared/XMLWriter.php on line 44

第二个问题：Fatal error: Class 'XMLWriter' not found in Classes/PHPExcel/Shared/XMLWriter.php on line 44

哥们 ，，，你这的问题怎么解决的说下哈，，，，