sidebar-footer.php

<?php
/**
 * Footer Aside Widget Areas
 *
 * Each StartBox-based theme can have up to 4 aside columns in the footer.
 * The logic below determines which to include and what the proper widths
 * should be. When adding widgets, always start with Footer Column and
 * advance numerically to Footer Column 4. Skipping a column breaks the logic.
 *
 * @since 2.4.2
 */
$footer1 = ( is_sidebar_active( 'footer_widget_area_1' ) || has_action( 'sb_no_footer_widget_area_1_widgets' ) );
$footer2 = ( is_sidebar_active( 'footer_widget_area_2' ) || has_action( 'sb_no_footer_widget_area_2_widgets' ) );
$footer3 = ( is_sidebar_active( 'footer_widget_area_3' ) || has_action( 'sb_no_footer_widget_area_3_widgets' ) );
$footer4 = ( is_sidebar_active( 'footer_widget_area_4' ) || has_action( 'sb_no_footer_widget_area_4_widgets' ) );

if ( $footer1 || $footer2 || $footer3 || $footer4 ) {

	$column = $column1 = $column2 = $column3 = $column4 = null;

	if ( $footer1 && $footer2 && $footer3 && $footer4 ) { $column = 'column one_fourth'; $column4 = ' last'; }
	elseif ( $footer1 && $footer2 && $footer3 ) { $column = 'column one_third'; $column3 = ' last'; }
	elseif ( $footer1 && $footer2 ) { $column = 'column one_half'; $column2 = ' last'; }
	else { $column = 'column last'; }

	do_action( 'sb_before_footer_widgets' );

	echo '<div id="footer_sidebar">';
		sb_do_sidebar( 'footer_widget_area_1', 'footer_widget_area_1', $column );
		sb_do_sidebar( 'footer_widget_area_2', 'footer_widget_area_2', $column . $column2 );
		sb_do_sidebar( 'footer_widget_area_3', 'footer_widget_area_3', $column . $column3 );
		sb_do_sidebar( 'footer_widget_area_4', 'footer_widget_area_4', $column . $column4 );
	echo '</div><!-- #footer_sidebar -->';

	do_action( 'sb_after_footer_widgets' );

}