获取wordpress注册用户的数量

global $wpdb
$users = $wpdb->get_var("select count(id) from $wpdb->users");
echo "总共有 ".$users." 位注册用户";

<?php $users=wp_list_authors('echo=0&exclude_admin=0&hide_empty=0&optioncount=1&style=0');

$users=split(',',$users);

echo '本站有', count($users), '位注册用户'; ?>