upgrade_450

WordPress Version: 5.3

/**
 * Executes changes made in WordPress 4.5.0.
 *
 * @ignore
 * @since 4.5.0
 *
 * @global int  $wp_current_db_version The old (current) database version.
 * @global wpdb $wpdb                  WordPress database abstraction object.
 */
function upgrade_450()
{
    global $wp_current_db_version, $wpdb;
    if ($wp_current_db_version < 36180) {
        wp_clear_scheduled_hook('wp_maybe_auto_update');
    }
    // Remove unused email confirmation options, moved to usermeta.
    if ($wp_current_db_version < 36679 && is_multisite()) {
        $wpdb->query("DELETE FROM {$wpdb->options} WHERE option_name REGEXP '^[0-9]+_new_email\$'");
    }
    // Remove unused user setting for wpLink.
    delete_user_setting('wplink');
}