图片上传，不支持汉字？求大神给例子，我这包括汉字就不行了

图片里包括汉字不行

图片全是汉字也不行 必须数字 或者 字母才行
大家有这样的问题么？
public function insertMissbaby()
{
$Baby = D('Missbaby');
if (!$Baby->create())
{
$this->error($Baby->getError());
}
else
{
import("ORG.Net.UploadFile");
$upload = new UploadFile();
$upload->maxSize = 3145728;
$upload->allowExts = array('jpg', 'gif', 'png', 'jpeg');
$upload->savePath = './Public/Home/ChildrenPhoto/';

$upload->thumb = true;
$upload->thumbMaxWidth = "500,80";
$upload->thumbMaxHeight = "500,80";
$upload->thumbPath = './Public/Home/ChildrenPhoto/';
$upload->thumbPrefix = "big_,small_";

if (!$upload->upload())
{
$this->error($upload->getErrorMsg());
}
else
{
$info = $upload->getUploadFileInfo();
$time = time() . rand(10, 99);
$name0 = explode(".", $info[0]['savename']);
$name1 = explode(".", $info[1]['savename']);
$name2 = explode(".", $info[2]['savename']);

$Baby->photo1 = "{$time}_1.{$name0[1]}";
$Baby->photo2 = "{$time}_2.{$name1[1]}";
$Baby->photo3 = "{$time}_3.{$name2[1]}";
$Baby->add();

rename('./Public/Home/ChildrenPhoto/' . $info[0]['savename'], './Public/Home/ChildrenPhoto/' . $time . '_1.' . $name0[1]);
rename('./Public/Home/ChildrenPhoto/' . $info[1]['savename'], './Public/Home/ChildrenPhoto/' . $time . '_2.' . $name1[1]);
rename('./Public/Home/ChildrenPhoto/' . $info[2]['savename'], './Public/Home/ChildrenPhoto/' . $time . '_3.' . $name2[1]);

rename('./Public/Home/ChildrenPhoto/' . 'big_' . $info[0]['savename'], './Public/Home/ChildrenPhoto/' . 'big_' . $time . '_1.' . $name0[1]);
rename('./Public/Home/ChildrenPhoto/' . 'small_' . $info[0]['savename'], './Public/Home/ChildrenPhoto/' . 'small_' . $time . '_1.' . $name0[1]);

unlink('./Public/Home/ChildrenPhoto/' . 'big_' . $info[1]['savename']);
unlink('./Public/Home/ChildrenPhoto/' . 'small_' . $info[1]['savename']);
unlink('./Public/Home/ChildrenPhoto/' . 'big_' . $info[2]['savename']);
unlink('./Public/Home/ChildrenPhoto/' . 'small_' . $info[2]['savename']);

$this->assign("jumpUrl", '__APP__/Baby/missBaby');
$this->success("添加成功!");
}
}
}