我正在使用函数wp_nav_menu 像这样：

<?php wp_nav_menu( array( 
                         \'container\' => false,
                         \'echo\' => true,
                         \'before\' => \'\',
                         \'after\' => \'\',
                         \'link_before\' => \'\',
                         \'link_after\' => \'\',
                         \'depth\' => 0,
                         \'walker\' => new my_walker())
                         ); ?>



class my_walker extends Walker_Nav_Menu
{
      function start_el(&$output, $item, $depth, $args)
      {
           global $wp_query;
           $indent = ( $depth ) ? str_repeat( "\\t", $depth ) : \'\';

           $class_names = $value = \'\';

           $classes = empty( $item->classes ) ? array() : (array) $item->classes;

           $class_names = join( \' \', apply_filters( \'nav_menu_css_class\', array_filter( $classes ), $item ) );
           $class_names = \' class="\'. esc_attr( $class_names ) . \'"\';

           $output .= $indent . \'<li class="menu-item-\'. $item->ID . \'"\' . $value . \'>\';

           $attributes  = ! empty( $item->attr_title ) ? \' title="\'  . esc_attr( $item->attr_title ) .\'"\' : \'\';
           $attributes .= ! empty( $item->target )     ? \' target="\' . esc_attr( $item->target     ) .\'"\' : \'\';
           $attributes .= ! empty( $item->xfn )        ? \' rel="\'    . esc_attr( $item->xfn        ) .\'"\' : \'\';
           $attributes .= ! empty( $item->url )        ? \' href="\'   . esc_attr( $item->url        ) .\'"\' : \'\';

           $prepend = \'<div>\';
           $append = \'</div>\';
           $description  = ! empty( $item->description ) ? \'<span>\'.esc_attr( $item->description ).\'</span>\' : \'\';

           if($depth != 0)
           {
               $description = $append = $prepend = "";
           }


            $item_output = $args->before;
            $item_output .= \'<a\'. $attributes .\'>\';
            $item_output .= \'<p>\'.$args->link_before .apply_filters( \'the_title\', $item->title, $item->ID );
            $item_output .= $description.$args->link_after.\'</p>\';
            $item_output .= $prepend;
            $item_output .= $append;
            $item_output .= \'</a>\';
            $item_output .= $args->after;

            $output .= apply_filters(\'walker_nav_menu_start_el\', $item_output, $item, $depth, $args);
            }
}