Create Sidebar on WordPress sites.

When we set up a WordPress site for the first time, we saw some default sidebars.

But if we need more than that, we can do that by using the below method.

We have to register sidebar but using register_sidebar function. You have to use the below code on your active theme’s functions.php file.

function themename_widgets_init() {
    register_sidebar( array(
        'name'          => __( 'Primary Sidebar', 'theme_name' ), //first sidebar
        'id'            => 'sidebar-1',
        'before_widget' => '<aside id="%1$s" class="widget %2$s">',
        'after_widget'  => '</aside>',
        'before_title'  => '<h3 class="widget-title">',
        'after_title'   => '</h3>',
    ) );
 
    register_sidebar( array(
        'name'          => __( 'Secondary Sidebar', 'theme_name' ), //second sidebar
        'id'            => 'sidebar-2',
        'before_widget' => '<ul><li id="%1$s" class="widget %2$s">',
        'after_widget'  => '</li></ul>',
        'before_title'  => '<h3 class="widget-title">',
        'after_title'   => '</h3>',
    ) );
}

For more details, visit this link.