How to Dynamically create and attach sidebars to pages and posts

With wordpress it is possible to select different sidebars for different pages, but it need to add some codes to theme functions.php. The follwing code will let you easily create new sidebars by simply adding the name to an array You will also be able to define the dynamically created sidebar a page loads by selecting from the custom sidebar selection metabox.

Step 1:First it will create a new metabox within the pages editor letting you attach one of the dynamically created sidebars. ADD this code to function.php

  $dynamic_widget_areas = array(
                /* rename or create new dynamic sidebars */
                "Sidebar 01",
                "Sidebar 02",
                "Sidebar 03",
                "Sidebar 04",
                "Sidebar 05",
                "Sidebar 06",
                "Sidebar 07",
                "Search Template",
                );
if ( function_exists('register_sidebar') ) {
    foreach ($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>
        ';
}

Step2: Second you will notice an array of names: ADD this code to sidebar.php

<!-- 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 -->

That's it now you can select your sidebar for particular page.