- $delete_options = $wpdb->get_col("SELECT o1.option_id FROM $wpdb->options AS o1 JOIN $wpdb->options AS o2 ON o2.option_name = o1.option_name AND o2.option_id > o1.option_id");
- if ( !empty($delete_options) ) {
- $delete_options = implode(',', $delete_options);
- $wpdb->query("DELETE FROM $wpdb->options WHERE option_id IN ($delete_options)");
- }