<?php
$args = array(
'depth' => 0,
'show_date' => '',
'date_format' => get_option('date_format'),
'child_of' => 0,
'exclude' => '',
'exclude_tree' => '',
'include' => '',
'title_li' => __('Pages'),
'echo' => 1,
'authors' => '',
'sort_column' => 'menu_order',
'sort_order' => 'ASC',
'link_before' => '',
'link_after' => '',
'meta_key' => '',
'meta_value' => '',
'number' => '',
'offset' => '',
'walker' => '',
'menu_class' => 'nav_list',
'container_id' => 'nav_list_first',
'theme_location' => 'left_menu',
'post_type' => 'page', // из функции get_pages()
);
?>
<?php echo wp_nav_menu($args) ?>