HTML：

     
    
       图片：     
      
        
               
               
               
       
        
       
            
                        
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CSS：

JS：

PHP：

public function mbUploadImg(){    $upload = new Upload(); // 实例化上传类    $upload->maxSize = 5242880 ; // 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 =  './Public/';    // 上传文件    $info = $upload->uploadOne($_FILES['files']);    if($info) {        // 上传成功        $data['name'] = $info['name'];        $data['ext'] = $info['ext'];        $data['type'] = $info['type'];        $data['savename'] = $info['savename'];        $data['savepath'] = "/Public/".$info['savepath'].$info['savename'];        $imgId = M('upload_img')->add($data);        if($imgId){            $resData['code'] = 200;            $resData['msg'] = '成功';            $resData['id'] = $imgId;            $resData['name'] = $data['name'];            $resData['savepath'] = $data['savepath'];            echo json_encode($resData);            return;        }    }    // 上传错误提示错误信息    return $this->ajaxReturn(['code'=>400,'msg'=>$upload->getError()]);}