我想你需要内爆（“，”，$excluded\\u pages）才能工作，

$excluded_pages = array();
$all_pages = get_pages();
foreach ( $all_pages as $the_page ) {
    if ( \'\' == $the_page->post_content ) {
        $excluded_pages[] = $the_page->ID;
    }
}
wp_list_pages( array(
    \'exclude\' => implode(\',\',$excluded_pages)
) );

EDIT