花了两天时间研究这个。我需要能够添加HTML到自定义菜单描述。我能找到的所有东西（包括在这个网站上）都是从2011年2月开始的，并且提到使用了strip\\u标签过滤器。然而，这不再有效。我正在开发WP 3.4 Beta 4。

我创建了一个自定义walker类，并找到了一个过滤器来删除HTML标记，并将以下内容放入函数中。php：

// Custom Walker Class to extend Default Nav Menu
class Description_Walker extends Walker_Nav_Menu {

function start_el(&$output, $item, $depth, $args)
{
    $classes     = empty ( $item->classes ) ? array () : (array) $item->classes;

    $class_names = join(
        \' \'
    ,   apply_filters(
            \'nav_menu_css_class\'
        ,   array_filter( $classes ), $item
        )
    );

    ! empty ( $class_names )
        and $class_names = \' class="\'. esc_attr( $class_names ) . \'"\';

// Build default menu items
    $output .= "<li id=\'menu-item-$item->ID\' $class_names>";

    $attributes  = \'\';

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

// Build the description
    $description = ( ! empty ( $item->description ) and 1 == $depth )
        ? \'<span class="nav_desc">\' . esc_html( $item->description ) . \'</span>\' : \'\';

    $title = apply_filters( \'the_title\', $item->title, $item->ID );

    $item_output = $args->before
        . "<a $attributes>"
        . $args->link_before
        . $title
        . \'</a> \'
        . $args->link_after
        . $description
        . $args->after;

    // Since $output is called by reference we don\'t need to return anything.
    $output .= apply_filters(
        \'walker_nav_menu_start_el\'
    ,   $item_output
    ,   $item
    ,   $depth
    ,   $args
    );
}
}

// Allow HTML descriptions in WordPress Menu
remove_filter( \'nav_menu_description\', \'strip_tags\' );
add_filter( \'wp_setup_nav_menu_item\', \'cus_wp_setup_nav_menu_item\' );
function cus_wp_setup_nav_menu_item( $menu_item ) {
       $menu_item->description = apply_filters( \'nav_menu_description\',  $menu_item-  >post_content );
       return $menu_item;
}

<?php wp_nav_menu( array( \'theme_location\' => \'primary\', \'menu\' => \'primary\', \'menu_class\' => \'menu sf-menu\', \'walker\' => new Description_Walker )); ?>

Menu Description

Results