Thinkphp上传图片

上传图片的HTML结构：

<form action="{:U('Config/addImg')}" enctype="multipart/form-data" method="post" >
    <input type="text" name="name" /><br>
    <input type="file" name="photo[]" /><br>
    <input type="submit" value="提交" >
</form>

上传PHP示例：

public function addImg(){
    $upload = new \Think\Upload();// 实例化上传类
    $upload->maxSize   =     3145728 ;// 设置附件上传大小
    $upload->exts      =     array('jpg', 'gif', 'png', 'jpeg');// 设置附件上传类型
    $upload->rootPath  =     "./Application/uploads/"; // 设置附件上传根目录
    $upload->savePath  =     ''; // 设置附件上传（子）目录
    // 上传文件 
    $info   =   $upload->upload();
    if(!$info){
        json_encode("上传失败");die;
    };
    $path = "Application/uploads/".$info['file']['savepath'].$info['file']['savename'];
    echo $path;
}