sidebar-footer.php - Add 3 new widget areas to the footer

<?php
/**
 * The Footer widget areas.
 *
 * @package WordPress
 * @subpackage Twenty_Eleven
 * @since Twenty Eleven 1.0
 */
?>

<?php
    /* The footer widget area is triggered if any of the areas
     * have widgets. So let's check that first.
     *
     * If none of the sidebars have widgets, then let's bail early.
     */
    if (   ! is_active_sidebar( 'sidebar-3'  )
        && ! is_active_sidebar( 'sidebar-4' )
        && ! is_active_sidebar( 'sidebar-5'  )
    )
        return;
    // If we get this far, we have widgets. Let do this.
?>
<div id="supplementary" <?php sonya_footer_sidebar_class(); ?>>
    <?php if ( is_active_sidebar( 'sidebar-3' ) ) : ?>
    <div id="first" class="widget-area" role="complementary">
        <?php dynamic_sidebar( 'sidebar-3' ); ?>
    </div><!-- #first .widget-area -->
    <?php endif; ?>

    <?php if ( is_active_sidebar( 'sidebar-4' ) ) : ?>
    <div id="second" class="widget-area" role="complementary">
        <?php dynamic_sidebar( 'sidebar-4' ); ?>
    </div><!-- #second .widget-area -->
    <?php endif; ?>

    <?php if ( is_active_sidebar( 'sidebar-5' ) ) : ?>
    <div id="third" class="widget-area" role="complementary">
        <?php dynamic_sidebar( 'sidebar-5' ); ?>
    </div><!-- #third .widget-area -->
    <?php endif; ?>

    <?php if ( is_active_sidebar( 'sidebar-6' ) ) : ?>
    <div id="fourth" class="widget-area" role="complementary">
        <?php dynamic_sidebar( 'sidebar-6' ); ?>
    </div><!-- #fourth .widget-area -->

    <?php if ( is_active_sidebar( 'sidebar-7' ) ) : ?>
    <div id="fifth" class="widget-area" role="complementary">
        <?php dynamic_sidebar( 'sidebar-7' ); ?>
    </div><!-- #fifth .widget-area -->

    <?php if ( is_active_sidebar( 'sidebar-8' ) ) : ?>
    <div id="sixth" class="widget-area" role="complementary">
        <?php dynamic_sidebar( 'sidebar-8' ); ?>
    </div><!-- #sixth .widget-area -->
    <?php endif; ?>
    <?php endif; ?>
    <?php endif; ?>
</div><!-- #supplementary -->