diff --git a/admin/login.php b/admin/login.php
index 2df246f6..ea05271a 100644
--- a/admin/login.php
+++ b/admin/login.php
@@ -16,8 +16,8 @@ include 'header.php';
         <h1><a href="https://typecho.org" class="i-logo">Typecho</a></h1>
         <form action="<?php $options->loginAction(); ?>" method="post" name="login" role="form">
             <p>
-                <label for="name" class="sr-only"><?php _e('用户名'); ?></label>
-                <input type="text" id="name" name="name" value="<?php echo $rememberName; ?>" placeholder="<?php _e('用户名'); ?>" class="text-l w-100" autofocus required />
+                <label for="name" class="sr-only"><?php _e('用户名或邮箱'); ?></label>
+                <input type="text" id="name" name="name" value="<?php echo $rememberName; ?>" placeholder="<?php _e('用户名或邮箱'); ?>" class="text-l w-100" autofocus />
             </p>
             <p>
                 <label for="password" class="sr-only"><?php _e('密码'); ?></label>
diff --git a/admin/register.php b/admin/register.php
index 642b8bc5..c3be8980 100644
--- a/admin/register.php
+++ b/admin/register.php
@@ -4,8 +4,8 @@ include 'common.php';
 if ($user->hasLogin() || !$options->allowRegister) {
     $response->redirect($options->siteUrl);
 }
-$rememberName = htmlspecialchars(\Typecho\Cookie::get('__typecho_remember_name'));
-$rememberMail = htmlspecialchars(\Typecho\Cookie::get('__typecho_remember_mail'));
+$rememberName = htmlspecialchars(\Typecho\Cookie::get('__typecho_remember_name', ''));
+$rememberMail = htmlspecialchars(\Typecho\Cookie::get('__typecho_remember_mail', ''));
 \Typecho\Cookie::delete('__typecho_remember_name');
 \Typecho\Cookie::delete('__typecho_remember_mail');
 
diff --git a/var/Typecho/Db.php b/var/Typecho/Db.php
index 5e4e5a0c..2805825d 100644
--- a/var/Typecho/Db.php
+++ b/var/Typecho/Db.php
@@ -449,10 +449,10 @@ class Db
      *
      * @param mixed $query 查询对象
      * @param array|null $filter 行过滤器函数,将查询的每一行作为第一个参数传入指定的过滤器中
-     * @return object|null
+     * @return \stdClass|null
      * @throws DbException
      */
-    public function fetchObject($query, ?array $filter = null): ?object
+    public function fetchObject($query, ?array $filter = null): ?\stdClass
     {
         $resource = $this->query($query);
 
diff --git a/var/Typecho/Db/Adapter.php b/var/Typecho/Db/Adapter.php
index 6ab95e7b..69585dbe 100644
--- a/var/Typecho/Db/Adapter.php
+++ b/var/Typecho/Db/Adapter.php
@@ -84,9 +84,9 @@ interface Adapter
      * 将数据查询的其中一行作为对象取出,其中字段名对应对象属性
      *
      * @param resource $resource 查询的资源数据
-     * @return object|null
+     * @return \stdClass|null
      */
-    public function fetchObject($resource): ?object;
+    public function fetchObject($resource): ?\stdClass;
 
     /**
      * 引号转义函数
diff --git a/var/Typecho/Db/Adapter/Mysqli.php b/var/Typecho/Db/Adapter/Mysqli.php
index 76467a79..2f3e5688 100644
--- a/var/Typecho/Db/Adapter/Mysqli.php
+++ b/var/Typecho/Db/Adapter/Mysqli.php
@@ -152,9 +152,9 @@ class Mysqli implements Adapter
      * 将数据查询的其中一行作为对象取出,其中字段名对应对象属性
      *
      * @param \mysqli_result $resource 查询的资源数据
-     * @return object|null
+     * @return \stdClass|null
      */
-    public function fetchObject($resource): ?object
+    public function fetchObject($resource): ?\stdClass
     {
         return $resource->fetch_object();
     }
diff --git a/var/Typecho/Db/Adapter/Pdo.php b/var/Typecho/Db/Adapter/Pdo.php
index 5a55aeef..a752eb7c 100644
--- a/var/Typecho/Db/Adapter/Pdo.php
+++ b/var/Typecho/Db/Adapter/Pdo.php
@@ -140,9 +140,9 @@ abstract class Pdo implements Adapter
      * 将数据查询的其中一行作为对象取出,其中字段名对应对象属性
      *
      * @param \PDOStatement $resource 查询的资源数据
-     * @return object|null
+     * @return \stdClass|null
      */
-    public function fetchObject($resource): ?object
+    public function fetchObject($resource): ?\stdClass
     {
         return $resource->fetchObject() ?: null;
     }
diff --git a/var/Typecho/Db/Adapter/Pdo/SQLite.php b/var/Typecho/Db/Adapter/Pdo/SQLite.php
index 01c8ea1f..a46806ee 100644
--- a/var/Typecho/Db/Adapter/Pdo/SQLite.php
+++ b/var/Typecho/Db/Adapter/Pdo/SQLite.php
@@ -48,9 +48,9 @@ class SQLite extends Pdo
      * 将数据查询的其中一行作为对象取出,其中字段名对应对象属性
      *
      * @param \PDOStatement $resource 查询的资源数据
-     * @return object|null
+     * @return \stdClass|null
      */
-    public function fetchObject($resource): ?object
+    public function fetchObject($resource): ?\stdClass
     {
         $result = $this->fetch($resource);
         return $result ? (object) $result : null;
diff --git a/var/Typecho/Db/Adapter/Pgsql.php b/var/Typecho/Db/Adapter/Pgsql.php
index d9294efc..d26c9fbc 100644
--- a/var/Typecho/Db/Adapter/Pgsql.php
+++ b/var/Typecho/Db/Adapter/Pgsql.php
@@ -110,9 +110,9 @@ class Pgsql implements Adapter
      * 将数据查询的其中一行作为对象取出,其中字段名对应对象属性
      *
      * @param resource $resource 查询的资源数据
-     * @return object|null
+     * @return \stdClass|null
      */
-    public function fetchObject($resource): ?object
+    public function fetchObject($resource): ?\stdClass
     {
         return pg_fetch_object($resource) ?: null;
     }
diff --git a/var/Typecho/Db/Adapter/SQLite.php b/var/Typecho/Db/Adapter/SQLite.php
index dd4b071f..9d16952b 100644
--- a/var/Typecho/Db/Adapter/SQLite.php
+++ b/var/Typecho/Db/Adapter/SQLite.php
@@ -92,9 +92,9 @@ class SQLite implements Adapter
      * 将数据查询的其中一行作为对象取出,其中字段名对应对象属性
      *
      * @param \SQLite3Result $resource 查询的资源数据
-     * @return object|null
+     * @return \stdClass|null
      */
-    public function fetchObject($resource): ?object
+    public function fetchObject($resource): ?\stdClass
     {
         $result = $this->fetch($resource);
         return $result ? (object) $result : null;