APP/小程序-微信授权解绑时，删除unionid绑定关系

app/common/repositories/user/UserRepository.php

@@ -3250,7 +3250,13 @@ class UserRepository extends BaseRepository
             } else {
                 $existUid = Db::name('user_extract_openid')->where('openid', $openid)->value('uid');
                 if (!empty($existUid) && $existUid != $user['uid']) {
-                    return ['code' => 400, 'msg' => '此微信号已被绑定'];
+                    $existUserData = Db::name("user")->where("uid", $existUid)->find();
+                    if ($existUserData['is_del'] != 1) {
+                        return ['code' => 400, 'msg' => '此微信号已被绑定'];
+                    } else {
+                        Db::name('user_extract_openid')->where('openid',$openid)->delete();
+                        Db::name("user")->where(['uid' => $existUid])->update(["wechat_user_id" => 0]);
+                    }
                 }
                 $check = Db::name('user_extract_openid')->where('uid', $user['uid'])->value('openid');
                 if (!empty($check)) {