How to programmatically remove a binding to a section?

Question

1C-Bitrix

Good evening!
You need to remove the current link to the section
. Here is part of the code

$dbOldGroups = CIBlockElement::GetElementGroups($arFields["ID"], true);
while($arGroup = $dbOldGroups->Fetch())
{
  $allGroup[]=$arGroup["ID"];
}
/*ЧАСТЬ КОДА*/
{
  if(array_search($rasp["ID"],$allGroup))
  {
    unset($allGroup[in_array($rasp["ID"],$allGroup)]);
  }
}
CIBlockElement::SetElementSection($arFields["ID"], $allGroup);

For some reason this method doesn't work.

Answer 1

you can simply delete an unnecessary entry from the \Bitrix\Iblock\SectionElementTable table