织梦cms后台增加php导出到excel功能不出现乱码

dede织梦系统怎样导出后台的文章或自定义模型中的数据到excel，并且不出现乱码在后台目录创建一个php文件toexcel.php,在最上面加入代码；require_once(dirname(__FILE__).'/config.php');require_once(DEDEINC.'/typelink.class.php');require_once(DEDEINC.'/datalistcp.class.php');require_once(DEDEADMIN.'/inc/inc_list_functions.php');加入导出到excel类；class Excel{ private $head; private $body; public function addHeader($arr){ foreach($arr as $headVal){ $headVal = $this->charset($headVal); $this->head .= "{$headVal} "; } $this->head .= " "; } public function addBody($arr){ foreach($arr as $arrBody){ foreach($arrBody as $bodyVal){ $bodyVal = $this->charset($bodyVal); $this->body .= "{$bodyVal} "; } $this->body .= " "; } } public function downLoad($filename=''){ if(!$filename) $filename = date('YmdHis',time()).'.xls'; header("Content-type:application/vnd.ms-excel"); header("Content-Disposition:attachment;filename=$filename"); header("Content-Type:charset=gb2312"); if($this->head) echo $this->head; echo $this->body; } public function charset($string){ return mb_convert_encoding($string,'GBK','auto'); }}代码解释：1.输出列名数组，并转码public function addHeader($arr){ foreach($arr as $headVal){ $headVal = $this->charset($headVal); $this->head .= "{$headVal} "; } $this->head .= " "; }2.输出导出内容数组，并转码public function addBody($arr){ foreach($arr as $arrBody){ foreach($arrBody as $bodyVal){ $bodyVal = $this->charset($bodyVal); $this->body .= "{$bodyVal} "; } $this->body .= " "; } }