setup_userdata( int $for_user_id = 0 )

1614function setup_userdata( $for_user_id = 0 ) {1615	global $user_login, $userdata, $user_level, $user_ID, $user_email, $user_url, $user_identity;1616 1617	if ( ! $for_user_id ) {1618		$for_user_id = get_current_user_id();1619	}1620	$user = get_userdata( $for_user_id );1621 1622	if ( ! $user ) {1623		$user_ID       = 0;1624		$user_level    = 0;1625		$userdata      = null;1626		$user_login    = '';1627		$user_email    = '';1628		$user_url      = '';1629		$user_identity = '';1630		return;1631	}1632 1633	$user_ID       = (int) $user->ID;1634	$user_level    = (int) $user->user_level;1635	$userdata      = $user;1636	$user_login    = $user->user_login;1637	$user_email    = $user->user_email;1638	$user_url      = $user->user_url;1639	$user_identity = $user->display_name;1640}