完美解决phpexcel导出到xls文件出现乱码的问题

<?php
include 'global.php';
$ids = $_get['ids'];

$sql = "select * from crm_cost_end where id in ( {$ids} )";
$result = $db->findall($sql);
//echo $result[1]['sn'];

//创建一个excel对象
$objphpexcel = new phpexcel();
// set properties 

$objphpexcel->getproperties()->setcreator("ctos")
    ->setlastmodifiedby("ctos")
    ->settitle("office 2007 xlsx test document")
    ->setsubject("office 2007 xlsx test document")
    ->setdescription("test document for office 2007 xlsx, generated using php classes.")
    ->setkeywords("office 2007 openxml php")
    ->setcategory("test result file");

//set width 
$objphpexcel->getactivesheet()->getcolumndimension('a')->setwidth(8);
$objphpexcel->getactivesheet()->getcolumndimension('b')->setwidth(10);
$objphpexcel->getactivesheet()->getcolumndimension('c')->setwidth(25);
$objphpexcel->getactivesheet()->getcolumndimension('d')->setwidth(12);
$objphpexcel->getactivesheet()->getcolumndimension('e')->setwidth(50);
$objphpexcel->getactivesheet()->getcolumndimension('f')->setwidth(10);
$objphpexcel->getactivesheet()->getcolumndimension('g')->setwidth(12);
$objphpexcel->getactivesheet()->getcolumndimension('h')->setwidth(12);
$objphpexcel->getactivesheet()->getcolumndimension('i')->setwidth(12);
$objphpexcel->getactivesheet()->getcolumndimension('j')->setwidth(30);

//设置行高度 
$objphpexcel->getactivesheet()->getrowdimension('1')->setrowheight(22);

$objphpexcel->getactivesheet()->getrowdimension('2')->setrowheight(20);

//set font size bold 
$objphpexcel->getactivesheet()->getdefaultstyle()->getfont()->setsize(10);
$objphpexcel->getactivesheet()->getstyle('a2:j2')->getfont()->setbold(true);

$objphpexcel->getactivesheet()->getstyle('a2:j2')->getalignment()->setvertical(phpexcel_style_alignment::vertical_center);
$objphpexcel->getactivesheet()->getstyle('a2:j2')->getborders()->getallborders()->setborderstyle(phpexcel_style_border::border_thin);

//设置水平居中 
$objphpexcel->getactivesheet()->getstyle('a1')->getalignment()->sethorizontal(phpexcel_style_alignment::horizontal_left);
$objphpexcel->getactivesheet()->getstyle('a')->getalignment()->sethorizontal(phpexcel_style_alignment::horizontal_center);
$objphpexcel->getactivesheet()->getstyle('b')->getalignment()->sethorizontal(phpexcel_style_alignment::horizontal_center);
$objphpexcel->getactivesheet()->getstyle('d')->getalignment()->sethorizontal(phpexcel_style_alignment::horizontal_center);
$objphpexcel->getactivesheet()->getstyle('f')->getalignment()->sethorizontal(phpexcel_style_alignment::horizontal_center);
$objphpexcel->getactivesheet()->getstyle('g')->getalignment()->sethorizontal(phpexcel_style_alignment::horizontal_center);
$objphpexcel->getactivesheet()->getstyle('h')->getalignment()->sethorizontal(phpexcel_style_alignment::horizontal_center);
$objphpexcel->getactivesheet()->getstyle('i')->getalignment()->sethorizontal(phpexcel_style_alignment::horizontal_center);

// 
$objphpexcel->getactivesheet()->mergecells('a1:j1');

// set table header content 
$objphpexcel->setactivesheetindex(0)
    ->setcellvalue('a1', '订单数据汇总 时间:' . date('y-m-d h:i:s'))
    ->setcellvalue('a2', '订单id')
    ->setcellvalue('b2', '下单人')
    ->setcellvalue('c2', '客户名称')
    ->setcellvalue('d2', '下单时间')
    ->setcellvalue('e2', '需求机型')
    ->setcellvalue('f2', '需求数量')
    ->setcellvalue('g2', '需求交期')
    ->setcellvalue('h2', '确认bom料号')
    ->setcellvalue('i2', 'pmc确认交期')
    ->setcellvalue('j2', 'pmc交货备注');

// miscellaneous glyphs, utf-8 

for ($i = 0; $i < count($result) - 1; $i++) {
  $objphpexcel->getactivesheet(0)->setcellvalue('a' . ($i + 3), $result[$i]['id']);
  $objphpexcel->getactivesheet(0)->setcellvalue('b' . ($i + 3), $result[$i]['realname']);
  $objphpexcel->getactivesheet(0)->setcellvalue('c' . ($i + 3), $result[$i]['customer_name']);
  $objphpexcel->getactivesheet(0)->setcellvalue('d' . ($i + 3), $ordersdata[$i]['create_time']);
  $objphpexcel->getactivesheet(0)->setcellvalue('e' . ($i + 3), $result[$i]['require_product']);
  $objphpexcel->getactivesheet(0)->setcellvalue('f' . ($i + 3), $result[$i]['require_count']);
  $objphpexcel->getactivesheet(0)->setcellvalue('g' . ($i + 3), $result[$i]['require_time']);
  $objphpexcel->getactivesheet(0)->setcellvalue('h' . ($i + 3), $result[$i]['product_bom_encoding']);
  $objphpexcel->getactivesheet(0)->setcellvalue('i' . ($i + 3), $result[$i]['delivery_time']);
  $objphpexcel->getactivesheet(0)->setcellvalue('j' . ($i + 3), $result[$i]['delivery_memo']);
  $objphpexcel->getactivesheet()->getstyle('a' . ($i + 3) . ':j' . ($i + 3))->getalignment()->setvertical(phpexcel_style_alignment::vertical_center);
  $objphpexcel->getactivesheet()->getstyle('a' . ($i + 3) . ':j' . ($i + 3))->getborders()->getallborders()->setborderstyle(phpexcel_style_border::border_thin);
  $objphpexcel->getactivesheet()->getrowdimension($i + 3)->setrowheight(16);
}


// rename sheet 
$objphpexcel->getactivesheet()->settitle('订单汇总表');


// set active sheet index to the first sheet, so excel opens this as the first sheet 
$objphpexcel->setactivesheetindex(0);


// redirect output to a client's web browser (excel5) 
<span style="color:#ff0000;">ob_end_clean();//清除缓冲区,避免乱码</span>
header('content-type: application/vnd.ms-excel');
header('content-disposition: attachment;filename="订单汇总表(' . date('ymd-his') . ').xls"');
header('cache-control: max-age=0');

$objwriter = phpexcel_iofactory::createwriter($objphpexcel, 'excel5');
$objwriter->save('php://output');
?>