phpexcel 导出多张图片

//写入excelfunction getExcel($fileName,$headArr,$data){    if(empty($data) || !is_array($data)){        die("data must be a array");    }    if(empty($fileName)){        exit;    }    $date = date("Y_m_d h:i:s",time());    $fileName .= "_{$date}.xlsx";     //创建新的PHPExcel对象    $objPHPExcel = new PHPExcel();    $objProps = $objPHPExcel->getProperties();         //设置表头    $key = ord("A");    foreach($headArr as $v){        $colum = chr($key);        $objPHPExcel->setActiveSheetIndex(0) ->setCellValue($colum.'1', $v);        $key += 1;    }    	//表数据    $column = 2;    $objActSheet = $objPHPExcel->getActiveSheet();    foreach($data as $key => $rows){ //行写入		$span = ord("A");        foreach($rows as $keyName=>$value){// 列写入            $j = chr($span);           //我想在此处加入图片的code但是不成功，应该怎么写，请提示下            // $objDrawing = new PHPExcel_Worksheet_Drawing();            // $objDrawing->setName(‘test’);            // $objDrawing->setDescription(‘test’);            // $objDrawing->setPath($data['imgurl']);            // $objDrawing->setHeight(36);            // $objDrawing->setCoordinates('');      这里应该怎么写？？            // $objDrawing->setWorksheet($objActSheet);            $objActSheet->setCellValue($j.$column, $value);            $span++;        }        $column++;    }	//重命名表    $objPHPExcel->getActiveSheet()->setTitle('记录');	$fileName = iconv("utf-8", "gb2312", $fileName);	$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');	$objWriter->save($fileName); //脚本方式运行，保存在当前目录	exit;}