Cacher is the code snippet organizer for pro developers

<?require($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/include/prolog_before.php");
global $USER;

//$arFilterUser = array("ID" => $USER->GetID());
  //$UserId = array(1, 2);
  //$UserIdForm = implode(" | ", $UserId);
  //$arFilter = array("ID" => $UserIdForm);
	//$arSelect = array("SELECT"=>array("UF_*"));
	$arSelect = array("FIELDS"=>array("EMAIL"));
  $arRes = CUser::GetList($by,$desc,$arFilter,$arSelect);
  while ($arUser = $arRes->GetNext())
  {
     echo $arUser["EMAIL"]." ".$arUser["DATE_REGISTER"]."<br>";
  }

  }

//или по группе
$dbUsers = CUser::GetList(($by="id"), ($order="desc"), Array("GROUPS_ID" => 5));

while($arUser = $dbUsers->Fetch()) :
	echo '<pre>';
	print_r($arUser);
	echo '</pre>';
endwhile;