Making plugin to use different table prefix cause permission problem
You will need to restore the database prefix after using it , with something like this global $wpdb; $previousPrefix=$wpdb->prefix; $wpdb->prefix=”mainsiteprefix_”; //Database access goes here $wpdb->prefix=$previousPrefix; or you can create a new wpdb object like this: $wpdb2 = new wpdb( DB_USER, DB_PASSWORD, DB_NAME, DB_HOST );