今天小编为大家分享一个实现WordPress多个站点使用同一个数据库的方法，在尚未安装WordPress，在初始配置WordPress之前，将wp-config.php中的$table_prefix值(默认为wp_)修改为所需要的表前缀(本文中假设为blog_），然后一路安装即可。
修改前:
/**
* WordPress Database Table prefix.
*
* You can have multiple installations in one database if you give each a unique
* prefix. Only numbers, letters, and underscores please!
*/
$table_prefix = \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
修改后：
/**
* WordPress Database Table prefix.
*
* You can have multiple installations in one database if you give each a unique
* prefix. Only numbers, letters, and underscores please!
*/
$table_prefix = \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’blog_\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
已安装WordPress
若WordPress已安装，则执行以下步骤：
1. 将wp-config.php中的$table_prefix值wp_修改为所需要的表前缀(blog_）。
2. 将MySQL数据库中的对应表前缀均修改为新的表前缀。
3. 执行以下数据库更新(请根据对于表前缀进行相应修改)：
UPDATE blog_usermeta SET meta_key =\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’blog_capabilities\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ WHERE meta_key =\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_capabilities\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
UPDATE blog_usermeta SET meta_key =\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’blog_user_level\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ WHERE meta_key =\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_user_level\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
UPDATE blog_options SET option_name=\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’blog_user_roles\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ WHERE option_name=\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_user_roles\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
4. 由于WordPress插件繁多，且实现都不同，请自行参考插件代码进行对应修改。
