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class AddImage{

    function AddImageFunc($arFields){
        $el = new CIBlockElement;
        $element_id = $arFields['ID'];

        // первый ресайз
        $res = CIBlockElement::GetList(
            array('sort'),
            array('ID' => $element_id),
            false,
            false,
            array("ID", "NAME", "PROPERTY_ORIGINAL")
        );

        while($ob = $res->GetNextElement()){
            $arFieldsElement = $ob->GetFields();
        }

        $original_image_id = $arFieldsElement['PROPERTY_ORIGINAL_VALUE'];

        $big_r1 = CFile::ResizeImageGet(
            $original_image_id,
            array('width'=>820, 'height'=>820),
            BX_RESIZE_IMAGE_PROPORTIONAL_ALT,
            true
        );

        $small_r1 = CFile::ResizeImageGet(
            $original_image_id,
            array('width'=>410, 'height'=>410),
            BX_RESIZE_IMAGE_PROPORTIONAL_ALT,
            true
        );

        $rectangle_r1 = CFile::ResizeImageGet(
            $original_image_id,
            array('width'=>820, 'height'=>410),
            BX_RESIZE_IMAGE_PROPORTIONAL_ALT,
            true
        );

        $big_file_array = CFile::MakeFileArray($big_r1['src']);
        $small_file_array = CFile::MakeFileArray($small_r1['src']);
        $rectangle_file_array = CFile::MakeFileArray($rectangle_r1['src']);

        $PROP = array(
            'BIG_TIME' => array("n0" => $big_file_array),
            'SMALL_TIME' => array("n0" => $small_file_array),
            'RECTANGLE_TIME' => array("n0" => $rectangle_file_array)
        );


        $el->Update($element_id, array('PROPERTY_VALUES' => $PROP));

        // второй ресайз
        $res = CIBlockElement::GetList(
            array('sort'),
            array('ID' => $element_id),
            false,
            false,
            array("ID", "NAME", "PROPERTY_BIG_TIME", "PROPERTY_SMALL_TIME", "PROPERTY_RECTANGLE_TIME")
        );

        while($ob = $res->GetNextElement()){
            $arFieldsElement = $ob->GetFields();
        }

        $big_image_id = $arFieldsElement['PROPERTY_BIG_TIME_VALUE'];
        $small_image_id = $arFieldsElement['PROPERTY_SMALL_TIME_VALUE'];
        $recangle_image_id = $arFieldsElement['PROPERTY_RECTANGLE_TIME_VALUE'];

        $big_r2 = CFile::ResizeImageGet(
            $big_image_id,
            array('width'=>820, 'height'=>820),
            BX_RESIZE_IMAGE_EXACT,
            true
        );


        $small_r2 = CFile::ResizeImageGet(
            $small_image_id,
            array('width'=>410, 'height'=>410),
            BX_RESIZE_IMAGE_EXACT,
            true
        );

        $rectangle_r2 = CFile::ResizeImageGet(
            $recangle_image_id,
            array('width'=>820, 'height'=>410),
            BX_RESIZE_IMAGE_EXACT,
            true
        );

        $big_file_array2 = CFile::MakeFileArray($big_r2['src']);
        $small_file_array2 = CFile::MakeFileArray($small_r2['src']);
        $rectangle_file_array2 = CFile::MakeFileArray($rectangle_r2['src']);

        $PROP2 = array(
            'BIG' => array("n0" => $big_file_array2),
            'SMALL' => array("n0" => $small_file_array2),
            'RECTANGLE' => array("n0" => $rectangle_file_array2)
        );

        $el->Update($element_id, array('PROPERTY_VALUES' => $PROP2));
    }
}