jQuery-Upload-Bild-Plugin ohne Aktualisierung

<link href="./css/upload.css" type="text/css" rel="stylesheet" />
<script src="./js/jquery.js"></script>
<script src="./js/upload.js"></script>

<div class="upload-box">
    <p class="upload-tip">作品图片：最多可以上传5张图片，马上上传</p>
    <div class="image-box clear">
        <section class="upload-section">
            <div class="upload-btn"></div>
            <input type="file" name="file" id="upload-input" value=""/>
        </section>
    </div>
</div>

$("#upload-input").ajaxImageUpload({
    url: 'http://www.gouguoyin.cn/demo/store141.html', //上传的服务器地址
    data: { name:'勾国印' },
    maxNum: 3, //允许上传图片数量
    zoom: true, //允许放大
    allowType: ["gif", "jpeg", "jpg", "bmp",'png'], //允许上传图片的类型
    maxSize :2, //允许上传图片的最大尺寸，单位M
    before: function () {
        alert('上传前回调函数');
    },
    success:function(data){
        alert('上传成功回调函数');
        console.log(data);
    },
    error:function (e) {
        alert('上传失败回调函数');
        console.log(e);
    }
});

$file = $_FILES["file"];
if(!isset($file['tmp_name']) || !$file['tmp_name']) {
    echo json_encode(['code' => 401, 'msg' => '没有文件上传']);
    return false;
}
if($file["error"] > 0) {
    echo json_encode(['code' => 402, 'msg' => $file["error"]]);
    return false;
}

$upload_path = $_SERVER['DOCUMENT_ROOT']."/upload/";
$file_path   = 'http://' . $_SERVER['HTTP_HOST']."/upload/";

if(!is_dir($upload_path)){
    echo json_encode(['code' => 403, 'msg' => '上传目录不存在']);
    return false;
}

if(move_uploaded_file($file["tmp_name"], $upload_path.$file['name'])){
    echo json_encode(['code' => 200, 'src' => $file_path.$file['name']]);
    return false;
}else{
    echo json_encode(['code' => 404, 'msg' => '上传失败']);
    return false;
}