WordPress网站报错求助：__autoload()弃用及后续报错问题

初始错误 #

Fatal error: __autoload() is no longer supported, use spl_autoload_register() instead in /home/storage/736/3736736/user/htdocs/wp-includes/compat.php on line 502

修改操作 #

参考其他工单后，我将wp-includes/compat.php第502行修改为：

function spl_autoload_register( $classname ) {
    ...
}

修改后新错误 #

Warning: Private methods cannot be final as they are never overridden by other classes in /home/storage/736/3736736/user/htdocs/wp-includes/class-wp-session-tokens.php on line 71

Deprecated: Required parameter $tt_id follows optional parameter $object_id in /home/storage/736/3736736/user/htdocs/wp-includes/nav-menu.php on line 931

Deprecated: Required parameter $taxonomy follows optional parameter $object_id in /home/storage/736/3736736/user/htdocs/wp-includes/nav-menu.php on line 931

Fatal error: Uncaught Error: Call to undefined function create_function() in /home/storage/736/3736736/user/htdocs/wp-content/plugins/LayerSlider/layerslider.php:69 Stack trace: #0 /home/storage/736/3736736/user/htdocs/wp-settings.php(303): include_once() #1 /home/storage/736/3736736/user/htdocs/wp-config.php(81): require_once('/home/storage/7...') #2 /home/storage/736/3736736/user/htdocs/wp-load.php(37): require_once('/home/storage/7...') #3 /home/storage/736/3736736/user/htdocs/wp-blog-header.php(13): require_once('/home/storage/7...') #4 /home/storage/736/3736736/user/htdocs/index.php(17): require('/home/storage/7...') #5 {main} thrown in /home/storage/736/3736736/user/htdocs/wp-content/plugins/LayerSlider/layerslider.php on line 69

解决方案 #

• 撤销对compat.php的修改：手动定义spl_autoload_register会和WordPress原生函数冲突，这是错误的修复方式，立即恢复该文件的原始内容。
• 核心原因：PHP版本与WordPress及插件版本不兼容：
  初始的__autoload()错误，是因为你使用的PHP版本（7.2+）已废弃该函数，但你的WordPress版本过老，仍在调用它；后续的警告和错误，均因老版本WordPress、LayerSlider插件不支持高版本PHP的语法规范（比如create_function()在PHP7.2被废弃，PHP8.0被彻底移除）。
• 具体修复步骤：
  1. 升级WordPress核心：若能访问后台，直接在后台完成升级；无法访问则通过FTP，用最新稳定版WordPress的wp-includes和wp-admin目录覆盖现有目录（注意保留wp-content目录和wp-config.php文件）。
  2. 升级LayerSlider插件：create_function()的错误来自该插件，更新至最新版本即可解决——可在后台插件页更新，或手动下载最新版插件文件覆盖wp-content/plugins/LayerSlider目录。
  3. 调整PHP版本：确认服务器PHP版本在WordPress官方要求范围内（当前推荐7.4~8.2），若版本不符，联系主机商调整。

内容的提问来源于stack exchange，提问作者mharkin