The WP_CACHE setting, if true, includes the wp-content/advanced-cache.php script, when executing wp-settings.php.
define( 'WP_CACHE', true );
Custom User and Usermeta Tables
CUSTOM_USER_TABLE and CUSTOM_USER_META_TABLE are used to designate that the user and usermeta tables normally utilized by WordPress are not used, instead these values/tables are used to store your user information.
define( 'CUSTOM_USER_TABLE', $table_prefix.'my_users' ); define( 'CUSTOM_USER_META_TABLE', $table_prefix.'my_usermeta' );
Note that even when you set the ‘CUSTOM_USER_META_TABLE’, a usermeta table is still created for each database with the corresponding permissions for each instance. By default, the WordPress installer will add permissions for the first user (ID #1). You also need to manage permissions to each of the site via a plugin or custom function. If this isn’t setup you’ll experience permission errors and log-in issues.
When using CUSTOM_USER_TABLE during initial setup it is easiest to: Setup your first instance of WordPress. The define statements of the wp-config.php on the first instance pointing to where you currently store user data wp_users by default, and then copying that working wp-config.php to your next instance which will only require you to change the $table_prefix = variable. At this point the install will run as expected; however, do not use an e-mail address that is already in use by your original install. Use a different e-mail address. Once you have finished the setup process log in with the auto generated admin account and password. Then promote your normal account to the administrator level. Log out of admin. Log in as yourself. Delete the admin account and promote the other user accounts as is needed.
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