PHPExcel导出图片到单元格

$objDrawing = new \PHPExcel_Worksheet_MemoryDrawing();
$value[\'sku_picture\'] = $this->url . $value[\'sku_picture\'];
$img_info = getimagesize($value[\'sku_picture\']);
$suffix_info = explode(\'/\', $img_info[\'mime\']);
$extname = $suffix_info[1];
# 图片写入
$objDrawImageResource = \'\';
if ($extname == \'jpg\' || $extname == \'jpeg\' || $extname == \'JPG\' || $extname == \'JPEG\') {
    $objDrawImageResource = @imagecreatefromjpeg($value[\'sku_picture\']);
} else if ($extname == \'png\' || $extname == \'PNG\') {
    $objDrawImageResource = @imagecreatefrompng($value[\'sku_picture\']);
} else if ($extname == \'gif\' || $extname == \'GIF\') {
    $objDrawImageResource = @imagecreatefromgif($value[\'sku_picture\']);
} else {
    $objPHPExcel->setActiveSheetIndex(0)->setCellValue(\'D\' . $num, $extname . \'格式图片无法导出\');
}
if ($objDrawImageResource && ($objDrawImageResource != $extname . \'格式图片无法导出\')) {
    $objDrawing->setImageResource($objDrawImageResource);
    $objDrawing->setRenderingFunction(\PHPExcel_Worksheet_MemoryDrawing::RENDERING_DEFAULT); //渲染方法
    $objDrawing->setMimeType(\PHPExcel_Worksheet_MemoryDrawing::MIMETYPE_DEFAULT);
    // 设置宽度高度
    $objDrawing->setHeight(150); //照片高度
    $objDrawing->setWidth(145); //照片宽度
    // 设置图片要插入的单元格
    $objDrawing->setCoordinates(\'D\' . $num);
    // 图片偏移距离
    $objDrawing->setOffsetX(15);
    $objDrawing->setOffsetY(15);
    $objDrawing->setWorksheet($objPHPExcel->getActiveSheet(0));
    $objPHPExcel->getActiveSheet()->getRowDimension($num)->setRowHeight(160);
}