删除上一次上传的头像

application/api/controller/Member.php

@@ -390,21 +390,23 @@ class Member extends Basic
             $info = $file->validate(['size'=>512000,'ext'=>'jpg,png'])      //限制500KB
                 ->move($path);
             if($info){
-                $img_path    = $info->getSaveName();  //生成的图片路径
-                $static_path = $path.DS.$img_path;    //生成图片的绝对路径
-                $image = \think\Image::open($static_path);
-                $image->thumb(500, 500)->save($static_path);   //生成缩略图
-
-                //更新用户信息
-                $user = new Users();
-                $user->update([
-                    'id'       => $this->userId,
-                    'user_pic' => $img_path
-                ]);
+                if ($this->userId) {
+                    $user = new Users();
+                    $user_data = $user->field('user_pic')->where('id',$this->userId)->find();
+                    @unlink($path.DS.$user_data->user_pic); //删除原来的图片
+                    $img_path    = $info->getSaveName();  //生成的图片路径
+                    $static_path = $path.DS.$img_path;    //生成图片的绝对路径
+                    $image = \think\Image::open($static_path);
+                    $image->thumb(500, 500)->save($static_path);   //生成缩略图
+
+                    //更新用户信息
+                    $user_data->user_pic = $img_path;
+                    $user_data->save();
+                    $data['status'] = 200;
+                    $data['msg']    = '上传成功';
+                    $data['data']   = ['file_name' => HEADERIMGURL . $img_path];
+                }
 
-                $data['status'] = 200;
-                $data['msg']    = '上传成功';
-                $data['data']   = ['file_name' => HEADERIMGURL . $img_path];
             }else{
                 // 上传失败获取错误信息
                 $data['msg'] = $file->getError();