Creare un widget
<?php if ( is_active_sidebar( 'nome-widget' ) ) { ?>
<ul id="sidebar">
<?php dynamic_sidebar( 'nome-widget' ); ?>
</ul>
<?php } ?>
<?php if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar('nome-widget') ) : ?>
<?php endif; ?>
if ( function_exists('register_sidebar') ) {
register_sidebar(array(
'name' => 'Nome Per Esteso Widget',
'id' => "nome-widget",
'before_widget' => '',
'after_widget' => '',
'before_title' => '',
'after_title' => '' ) );
}