How to Retrieve All Section Fields, Including Custom Fields, in section.php

If you need information about the current section that is missing from the original array, you can use CIBlockFindTools::GetSectionID. This method retrieves the current section ID.

$arResult['SECTION_ID'] = CIBlockFindTools::GetSectionID(
     $arResult['VARIABLES']['SECTION_ID'],
     $arResult['VARIABLES']['SECTION_CODE'],
     array('IBLOCK_ID' => $arParams['IBLOCK_ID'])
);

Using CIBlockFindTools::GetSectionID, we can store the current section ID in $arResult['SECTION_ID'].

Once we know the section ID, we can use CIBlockSection::GetList to retrieve the required section information, including custom fields. List the fields you need in $arSelect and store the retrieved information in variables.

$arSelect = array(
           'NAME',
           'DESCRIPTION',
           'PICTURE',
           'UF_*' // все пользовательские поля, можно перечислять конкретные
);
$sectionResult = CIBlockSection::GetList(
     false,
     array(
          "IBLOCK_ID" => $arParams["IBLOCK_ID"], 
          "ID" => $arResult["SECTION_ID"]
     ), 
    false,
    $arSelect
);
while ($sectionProp = $sectionResult->GetNext()) {
   $sectDescript = $sectionProp['DESCRIPTION'];  // Описание раздела
   $sectPict = $sectionProp['PICTURE'];  // Картинка раздела
   $ufLink = $sectionProp['~UF_LINK']; // Пользователькое поле с кодом UF_LINK- в html формате
   $ufText = $sectionProp['UF_TEXT']; // Пользователькое поле с кодом UF_TEXT
}

These variables can then be used anywhere in section.php, checking that they exist and are not empty to ensure the code works correctly.

//Картинка (с уменьшением)
if (!empty($sectPict)) {
   $renderImageSect = CFile::ResizeImageGet($sectPict, Array("width" => '1200', "height" => '400'), BX_RESIZE_IMAGE_EXACT);
   echo $renderImageSect['src']
} 

//Описание
if (!empty($sectDescript)) {
   echo $sectDescript;
}