laravel post 上传图片

<script>
$(document).ready(function(e) {
$('#uploadphoto').localResizeIMG({
width: 400,
quality: 1,
success: function (result) {
var submitData=result.clearBase64;
var attstr= '<div  id="imgboxs"><img src="data:image/jpeg;base64,'+submitData+'" style="width:100%;height:200px"><input type="hidden" name="base64_string" value='+submitData+' /></div>';
document.getElementById('imglist').innerHTML = "";
$(".imglist").append(attstr);
return false;
}
});
});
</script>
<form action="{{ URL('index/edit_cheak') }}" method="post" enctype="multipart/form-data">
<input type="hidden" name="_token" value="{{ csrf_token() }}"/>
<div style="width:100%;margin:10px auto; border:solid 1px #ddd; overflow:hidden; ">
<input type="file" id="uploadphoto" accept="image/*" capture="camera" name="uploadfile" value="请点击上传图片"   style="display:none;" />
<a href="javascript:void(0);" onclick="uploadphoto.click()" class="uploadbtn">请点击上传图片      </a>
<div class="imglist" id="imglist"></div>

</div>
<input type="submit" value="提交" style="-webkit-appearance:none;"  id="tijiao"/>
</form>

public function edit_cheak(Request $request){
$username=$request->session()->get('username');
$shop=DB::table('shop')->where('username',$username)->first();
$input=Input::all();
if (isset($input['base64_string'])) {
foreach ($input['base64_string'] as $key => $v) {
$savename = date('YmdHis',time()).mt_rand(0,9999).'.jpeg';//localResizeIMG压缩后的图片都是jpeg格式
$url_i="Upload/".date('Y-m-d',time()).'/';
$imgdirs = "huogou/public/".$url_i;
// $imgdirs = "Upload/".date('Y-m-d',time()).'/';
mkdirs($url_i);
$imgurls = $_SERVER['DOCUMENT_ROOT'].'/'.$imgdirs;
$image = base64_to_img( $v, $imgurls,$savename );
$data['savepath'] = $url_i;
$imgname[] = $savename;
}
$data['image']=implode("||",$imgname).'||';
if ($shop->image) {
$imgs=explode("||",$shop->image);
unset($imgs[count($imgs) - 1]);
foreach ($imgs as $key => $va) {
$old_urls = $_SERVER['DOCUMENT_ROOT'].'/huogou/public/'.$shop->imgurl.$va;
$old_urls1 = $_SERVER['DOCUMENT_ROOT'].'/huogou/public/'.$shop->imgurl.'thumb/'.$va;
if (file_exists ( $old_urls ) && file_exists ( $old_urls1 ) ) {
unlink ( $old_urls );
unlink ( $old_urls1 );
}
}
}
}
$dat = DB::table('shop')->where('id',$shop->id)->update($data);
if ($dat) {
return view('Index/bj_sucess')->with('shop_bj','1');
}else{
return "<script>javascript :history.back(-1);</script>";
}
}