Dynamic_sidebar() | Function | register_sidebar in Wordpress !

Here is the way to add dynamic sidebar or custom widget area to your website..without using any plugin in wordpress !

<?php 
function nst_child_sidebar() {
    register_sidebar( array(
        'name' => __( 'Top bar', 'nst_child' ),
        'id' => 'top-bar',
        'description' => __( 'At header top.', 'nst_child' ),
        'before_widget' => '<div id="%1$s" class="widget-top %2$s">',
	'after_widget'  => '</div>',
	'before_title'  => '<h2 class="widgettitle-top">',
	'after_title'   => '</h2>',
     ) );	 
 
}
add_action( 'widgets_init', 'nst_child_sidebar' );
?>

In above code you can change ID and NAME etc..of the sidebar ..like above code.

You can add multiple widget’s area to site using like this…

<?php 
function nst_child_sidebar() {
   register_sidebar( array(
       'name' => __( 'Top bar', 'nst_child' ),
       'id' => 'top-bar',
       'description' => __( 'At header top.', 'nst_child' ),
       'before_widget' => '<div id="%1$s" class="widget-top %2$s">',
       'after_widget'  => '</div>',
       'before_title'  => '<h2 class="widgettitle-top">',
       'after_title'   => '</h2>',
     ) );
	 
  // Second Widget Area
 register_sidebar( array(
     'name' => __( 'Footer logos', 'nst_child' ),
     'id' => 'foot-logos',
     'description' => __( 'At Footer logos.', 'nst_child' ),
     'before_widget' => '<div id="%1$s" class="widget-footer %2$s">',
     'after_widget'  => '</div>',
     'before_title'  => '<h2 class="widgettitle-footer">',
     'after_title'   => '</h2>',
    ) );

}
add_action( 'widgets_init', 'nst_child_sidebar' );
?>

And here is the shortcode to show the widgets in php file..