WordPress的数据库表默认都是wp_，但是会有很多站长想要修改WordPress数据库的前置来提高安全性，那么修改WordPress数据库前缀方法是什么？
开始之前
修改数据是一件风险很高的工作，开始之前必然就是做好数据库备份
修改数据库前缀
打开你的 wp-config.php 文件，把数据库前缀 wp_ 改成你想要的前缀，比如 22vd_。
$table_prefix = \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’22vd_\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
修改数据表名字
打开 PHPMySQL，找到你的数据库，然后执行以下 SQL，把所有数据库表前缀从 wp_ 改成 22vd_ 。
RENAME table \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_commentmeta\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ TO \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’22vd_commentmeta\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
RENAME table \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_comments\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ TO \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’22vd_comments\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
RENAME table \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_links\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ TO \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’22vd_links\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
RENAME table \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_options\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ TO \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’22vd_options\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
RENAME table \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_postmeta\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ TO \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’22vd_postmeta\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
RENAME table \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_posts\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ TO \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’22vd_posts\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
RENAME table \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_terms\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ TO \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’22vd_terms\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
RENAME table \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_term_relationships\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ TO \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’22vd_term_relationships\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
RENAME table \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_term_taxonomy\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ TO \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’22vd_term_taxonomy\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
RENAME table \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_usermeta\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ TO \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’22vd_usermeta\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
RENAME table \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_users\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ TO \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’22vd_users\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
修改 Options 表中的数据
使用下面语句把 options 表中的 option_name 以 wp_ 开头的值改成 22vd_ 开头。
SELECT REPLACE(option_name, \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’, \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’22vd_\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’) FROM wpdx_options;
修改 UserMeta 表中的数据
使用下面语句把 UserMeta 表中的 meta_key 以 wp_ 开头的值改成 22vd_ 开头。
SELECT REPLACE(meta_key, \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’, \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’22vd_\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’) FROM wpdx_usermeta;