更新到最新版本的Wordpress 4.9.7之后，我现在在网站顶部看到这些错误消息：
警告：array_keys（）期望参数1为数组，在第278行/srv/disk3/2206425/www/thailandpoolshop.com/wp-includes/class-wp-roles.php中给出的字符串
警告：第278行/srv/disk3/2206425/www/thailandpoolshop.com/wp-includes/class-wp-roles.php中为foreach（）提供了无效参数
Wordpress工具栏也消失了，无法访问Wordpress Dashbaord，用户无法登录，签出甚至查看某些页面。管理员无权访问。
我已经替换了整个Wordpress版本，还替换了以前的版本4.9.6和4.9.5，以查看错误是否可以自行纠正，但仍然存在。我无法登录该网站，因为没有可用的用户角色。 我根本没有编辑此文件。自动更新在一夜之间发生。
由于我没有收到Wordpress的回复，因此任何人都可以提供有关如何解决此问题的任何建议，而在论坛上遇到相同麻烦的其他许多人也没有解决办法。
任何帮助将不胜感激！
答案 0 :(得分：0)
大家好，
我设法解决了这个问题！自 Wordpress 4.9.7更新以来，很多人都遇到了错误，停机等问题，因此我确定了问题所在，并且错误位于您的数据库中。首先，备份您的数据库。永远要安全，不要后悔！
然后，我通过托管禁用了所有插件（由于用户角色错误，无法在Wordpress中使用该插件）
现在，使用phpMyAdmin（或您自己的等效文件）并单击数据库，您想打开一个新的SQL命令。您可以通过点击顶部的“ SQL”标签来完成此操作。
接下来，您要将这行代码作为SQL命令，它将从wp_options表中选择全部，其中选项名称等于wp_user_roles：
select * from wp_options where option_name='wp_user_roles'
现在，您需要通过双击该属性的框来编辑option_value，删除当前被弄乱的用户角色，并用实际上不会弄乱您的网站的新角色替换！就我个人而言，我使用了以下方法：
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用户角色代码之所以这么长，是因为我一直在工作的网站上使用的插件数量众多，尽管对于其他网站可能有所不同。但是，请尝试尝试我的代码，因为它也可以修复您的代码。
如果没有，请随时发表评论，因为我仍然很乐意帮助您解决此问题，因为我知道我自己解决了多长时间！