自定义导航菜单的最佳方法是使用自定义\'walker\' 作用以下是如何实现所需定制的步骤！

在主题目录中创建一个新自定义的“wp custom nav walker.php”文件\'walker\' 类别Walker_Nav_Menu 类别和copy the class\' function 您要在新类中修改并重写它的，例如：

<?php
class WP_Custom_Nav_Walker extends Walker_Nav_Menu {

/**
 * Start the element output.
 *
 * @see Walker::start_el()
 *
 * @since 3.0.0
 *
 * @param string $output Passed by reference. Used to append additional content.
 * @param object $item   Menu item data object.
 * @param int    $depth  Depth of menu item. Used for padding.
 * @param array  $args   An array of arguments. @see wp_nav_menu()
 * @param int    $id     Current item ID.
 */
public function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
    $indent = ( $depth ) ? str_repeat( "\\t", $depth ) : \'\';

    $classes = empty( $item->classes ) ? array() : (array) $item->classes;
    $classes[] = \'menu-item-\' . $item->ID;

    /**
     * Filter the CSS class(es) applied to a menu item\'s list item element.
     *
     * @since 3.0.0
     * @since 4.1.0 The `$depth` parameter was added.
     *
     * @param array  $classes The CSS classes that are applied to the menu item\'s `<li>` element.
     * @param object $item    The current menu item.
     * @param array  $args    An array of {@see wp_nav_menu()} arguments.
     * @param int    $depth   Depth of menu item. Used for padding.
     */
    $class_names = join( \' \', apply_filters( \'nav_menu_css_class\', array_filter( $classes ), $item, $args, $depth ) );
    $class_names = $class_names ? \' class="\' . esc_attr( $class_names ) . \'"\' : \'\';

    /**
     * Filter the ID applied to a menu item\'s list item element.
     *
     * @since 3.0.1
     * @since 4.1.0 The `$depth` parameter was added.
     *
     * @param string $menu_id The ID that is applied to the menu item\'s `<li>` element.
     * @param object $item    The current menu item.
     * @param array  $args    An array of {@see wp_nav_menu()} arguments.
     * @param int    $depth   Depth of menu item. Used for padding.
     */
    $id = apply_filters( \'nav_menu_item_id\', \'menu-item-\'. $item->ID, $item, $args, $depth );
    $id = $id ? \' id="\' . esc_attr( $id ) . \'"\' : \'\';

    $output .= $indent . \'<li\' . $id . $class_names .\'>\';

    $atts = array();
    $atts[\'title\']  = ! empty( $item->attr_title ) ? $item->attr_title : \'\';
    $atts[\'target\'] = ! empty( $item->target )     ? $item->target     : \'\';
    $atts[\'rel\']    = ! empty( $item->xfn )        ? $item->xfn        : \'\';
    $atts[\'href\']   = ! empty( $item->url )        ? $item->url        : \'\';

    /**
     * Filter the HTML attributes applied to a menu item\'s anchor element.
     *
     * @since 3.6.0
     * @since 4.1.0 The `$depth` parameter was added.
     *
     * @param array $atts {
     *     The HTML attributes applied to the menu item\'s `<a>` element, empty strings are ignored.
     *
     *     @type string $title  Title attribute.
     *     @type string $target Target attribute.
     *     @type string $rel    The rel attribute.
     *     @type string $href   The href attribute.
     * }
     * @param object $item  The current menu item.
     * @param array  $args  An array of {@see wp_nav_menu()} arguments.
     * @param int    $depth Depth of menu item. Used for padding.
     */
    $atts = apply_filters( \'nav_menu_link_attributes\', $atts, $item, $args, $depth );

    $attributes = \'\';
    foreach ( $atts as $attr => $value ) {
        if ( ! empty( $value ) ) {
            $value = ( \'href\' === $attr ) ? esc_url( $value ) : esc_attr( $value );
            $attributes .= \' \' . $attr . \'="\' . $value . \'"\';
        }
    }

    $item_output = $args->before;
    $item_output .= \'<a\'. $attributes .\'>\';
    /** This filter is documented in wp-includes/post-template.php */


    // YOUR ADDED CONTROL STARTS HERE!!
    if ( $args->link_before === \'checkbox\' ) {
        $item_output .= \'<input id="toggle\' . $item->ID . \'" type="checkbox" /> <label for="toggle\' . $item->ID . \'">\';
    }
    $item_output .= apply_filters( \'the_title\', $item->title, $item->ID ) . $args->link_after;
    // YOUR ADDED CONTROL ENDS HERE!!


    $item_output .= \'</a>\';
    $item_output .= $args->after;

    /**
     * Filter a menu item\'s starting output.
     *
     * The menu item\'s starting output only includes `$args->before`, the opening `<a>`,
     * the menu item\'s title, the closing `</a>`, and `$args->after`. Currently, there is
     * no filter for modifying the opening and closing `<li>` for a menu item.
     *
     * @since 3.0.0
     *
     * @param string $item_output The menu item\'s starting HTML output.
     * @param object $item        Menu item data object.
     * @param int    $depth       Depth of menu item. Used for padding.
     * @param array  $args        An array of {@see wp_nav_menu()} arguments.
     */
    $output .= apply_filters( \'walker_nav_menu_start_el\', $item_output, $item, $depth, $args );
}

}

在您的functions.php文件中包括wp custom nav walker.php文件：

// Register Custom Navigation Walker
require get_template_directory() . \'/wp-custom-nav-walker.php\';
// OR
require_once(\'wp-custom-nav-walker.php\');

然后像这样使用它：

// Primary navigation menu.
wp_nav_menu( array(
    \'menu_class\'     => \'nav-menu\',
    \'theme_location\' => \'primary\',
    \'link_before\'    => \'checkbox\',
    \'walker\'         => new WP_Custom_Nav_Walker(),
) );

有关更多信息，请查看the wp_nav_menu() code reference.