How to filter infoblock elements in catalog.section?

Question

1C-Bitrix

Hello!
How to filter infoblock elements in catalog.section?
It is necessary to make sure that the elements are not displayed if all three property values ​​are empty (property type is "Number").
tried it in different ways:

$GLOBALS['arrFilterС'] = array(
         "!=PROPERTY_SKLAD_1" => '',
         "!=PROPERTY_SKLAD_2" => '', 
         "!=PROPERTY_SKLAD_3" => ''
);
$GLOBALS['arrFilterС'] = array(
        array(
                "LOGIC" => "OR",
                array("!=PROPERTY_SKLAD_1" => ''),
                array("!=PROPERTY_SKLAD_2" => ''),
                array("!=PROPERTY_SKLAD_3" => ''),
            ),
);
/*
так же пробовал свойства прописывать так:
PROPERTY_SKLAD_1_VALUE
DISPLAY_PROPERTY_SKLAD_1_VALUE
DISPLAY_PROPERTY_SKLAD_1
так же пробовал в значении использовать '', 0, '0'
перед свойством пробовал писать >
так же вместо $GLOBALS['arrFilterС']  пробовал просто писать $arrFilterС
*/

in component connection:

"FILTER_NAME" => 'arrFilterC',
"USE_FILTER" => 'Y',

What could be the problem?

Answer 1

They like if are not set, then NULL. Try to output var_dump'om in a template of a component and to look at their values.
Before connecting the component, write this:

global $arFilter;
$arFilter = [
  "PROPERTY_SKLAD_1" => !NULL,
  "PROPERTY_SKLAD_2" => !NULL,
  "PROPERTY_SKLAD_3" => !NULL,
]

Answer 2

If the values ​​are numeric then you can do this:

global $arrFilter;
$arrFilter = [
  ">PROPERTY_BLOG_POST_ID" => 0,
  ">PROPERTY_BLOG_COMMENTS_CNT" => 0,
];