Why does Bitrix give an error when requesting CUser::GetList() with a filter by a custom field?

Question

PHP

There is an array. I do foreach and look for the value of the user's $codeTT variable.

$arUsers = CUser::GetList(($by="ID"),($order="desc"),Array("UF_CODE_TT" => $codeTT), array("SELECT"=>array("UF_CODE_TT")));

Bitrix gives an error Fatal error: Call to undefined method SimpleXMLElement::compile() in /home/miroplat/aviva.zaimi24.ru/docs/bitrix/modules/main/classes/general/usertype.php on line 2732

Answer 1

It turned out that because $codeT was an object, it was necessary to convert it to a string settype($codeTT, "string")

Answer 2

How to start learning web design?
Where to start learning UI/UX design?
Where to start learning adobe photoshop?
Photoshop & Web-design training methodology - what is it?
How to learn web design?

Answer 3

design not only in photoshop is done
by an illustrator is also convenient
graphic design is better to study at courses in moscow -
you must definitely complete tasks from good masters and get corrections from a teacher

Answer 4

Copy some site in Photoshop. For example, draw a template like this https://dribbble.com/shots/2266601-IMDb-design-con... Or a fashionable app https://dribbble.com/shots/3281070-Swipe-Scheduler. While doing it, you understand about shadows, masks, find a trendy popular font (proxima)))). Or find a beautiful WordPress theme and draw the template in Photoshop.
10 such layouts - and we can assume that you know how to create landing pages))) More knowledge and skills than after the course.
When you come across real life, along the way you will have to read a couple of articles about grids, typography, composition. Find a cool site with icons and photos. Read Igor Shtang's layout... and it begins...
Everything is like learning HTML/CSS - learned the basics, armed with a dock, made up 10 templates. You know how! To work! Then you learn normal code, frills and process optimization. And bootstrap, angular, webpack...)))