Dynamically create and attach sidebars to pages or posts

    $dynamic_widget_areas = array(
		/* rename or create new dynamic sidebars */
		"Sidebar 01",
		"Sidebar 02",
		"Sidebar 03",
		"Sidebar 04",
		"Sidebar 05",
		"Sidebar 06",
		"Sidebar 07",
		"Search Template",
		);
if ( function_exists('register_sidebar') ) {
    foreach ($dynamic_widget_areas as $widget_area_name) {
        register_sidebar(array(
           'name'=> $widget_area_name,
           'before_widget' => '<div id="%1$s" class="widget %2$s left half">',
           'after_widget' => '</div>',
           'before_title' => '<h3 class="widgettitle">',
           'after_title' => '</h3>',
        ));
    }
}
	add_action("admin_init", "sidebar_init");
	add_action('save_post', 'save_sidebar_link');
	function sidebar_init(){
		add_meta_box("sidebar_meta", "Sidebar Selection", "sidebar_link", "page", "side", "default");
	}
	function sidebar_link(){
		global $post, $dynamic_widget_areas;
		$custom  = get_post_custom($post->ID);
		$link    = $custom["_sidebar"][0];
	?>
<div class="link_header">
	<?
	echo '<select name="link" class="sidebar-selection">';
	echo '<option>Select Sidebar</option>';
	echo '<option>-----------------------</option>';
	foreach ( $dynamic_widget_areas as $list ){
		    if($link == $list){
		      echo '<option value="'.$list.'" selected="true">'.$list.'</option>';
			}else{
		      echo '<option value="'.$list.'">'.$list.'</option>';
			}
		}
	echo '</select><br />';
	?>
</div>
<p>Select sidebar to use on this page.</p>
<?php
}
function save_sidebar_link(){
global $post;
if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {return $post->ID;}
	update_post_meta($post->ID, "_sidebar", $_POST["link"]);
}
add_action('admin_head', 'sidebar_css');
function sidebar_css() {
	echo'
	<style type="text/css">
		.sidebar-selection{width:100%;}
	</style>
	';
}

<!-- begin sidebar -->
<div id="sidebar">
<?
	   global $post;
	   $custom  = get_post_custom($post->ID);
	   $link    = $custom["_sidebar"][0];
	if($link != ''){
	    echo '<ul id="widgets">';
		if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar($link) ) :
		endif;
	    echo '</ul>';
	}
?>
</div>
<!-- end sidebar -->