image_thumb,$this- image,0,0,0,0,$width,$height,
$this- info['width'],$this- info['height']);
imagedestroy...imagecopymerge($this- image,$water,$local['x'],$local['y'],0,0,$info2[0],$info2[1],$alpha);
//6.销毁水印图片
imagedestroy...$this- info['type']);
}
/**
* 销毁图片 使用析构函数
*/
public function __destruct()
{
imagedestroy