function picturetodb($files,$filesize) {
//实例化数据模型

$fp = fopen($files,"rb");
$img= addslashes(fread($fp,$filesize));

$Data=M('picture');
$arr=$Data->order('pictureid desc')->find();
$pictureid=$arr['pictureid'];
if($pictureid==""){
$pictureid = 1 ;
}
else if($pictureid!=""){
$pictureid = $pictureid + 1 ;
}
$info['pictureid']=$pictureid;
$info['Image']=$img;

$count=$Data->add($info);

if($count){
$this->success('图片上传成功！');
}else{
$this->error('图片存储失败！');
}