get_current_user_id()
为您提供logged in 使用者那就是:你。
您必须获得所有用户:
<?php
$users = get_users();
foreach( $users as $user ) {
$udata = get_userdata( $user->ID );
$registered = $udata->user_registered;
printf( \'%s member since %s<br>\', $udata->data->display_name, date( "M Y", strtotime( $registered ) ) );
}