Array
(
    [ID] => 199
    [IBLOCK_ID] => 38
    [NAME] => Картинки галереи
    [ACTIVE] => Y
    [SORT] => 330
    [CODE] => MORE_PHOTO
    [DEFAULT_VALUE] => 
    [PROPERTY_TYPE] => F
    [ROW_COUNT] => 1
    [COL_COUNT] => 30
    [LIST_TYPE] => L
    [MULTIPLE] => Y
    [XML_ID] => MORE_PHOTO
    [FILE_TYPE] => jpg, gif, bmp, png, jpeg
    [MULTIPLE_CNT] => 5
    [LINK_IBLOCK_ID] => 0
    [WITH_DESCRIPTION] => Y
    [SEARCHABLE] => N
    [FILTRABLE] => N
    [IS_REQUIRED] => N
    [VERSION] => 1
    [USER_TYPE] => 
    [USER_TYPE_SETTINGS] => 
    [HINT] => 
    [~NAME] => Картинки галереи
    [~DEFAULT_VALUE] => 
    [VALUE_ENUM] => 
    [VALUE_XML_ID] => 
    [VALUE_SORT] => 
    [VALUE] => Array
        (
            [0] => 129540
            [1] => 129541
            [2] => 129542
            [3] => 129656
        )

    [PROPERTY_VALUE_ID] => Array
        (
            [0] => 107645
            [1] => 107646
            [2] => 107647
            [3] => 107649
        )

    [DESCRIPTION] => Array
        (
            [0] => 
            [1] => 
            [2] => 
            [3] => 
        )

    [~VALUE] => Array
        (
            [0] => 129540
            [1] => 129541
            [2] => 129542
            [3] => 129656
        )

    [~DESCRIPTION] => Array
        (
            [0] => 
            [1] => 
            [2] => 
            [3] => 
        )

)

Увеличить

array(4) {
  [69628]=>
  array(4) {
    ["SORT"]=>
    string(3) "500"
    ["ID"]=>
    int(69628)
    ["IBLOCK_ID"]=>
    int(39)
    ["PARENT_ID"]=>
    int(69357)
  }
  [69629]=>
  array(4) {
    ["SORT"]=>
    string(3) "500"
    ["ID"]=>
    int(69629)
    ["IBLOCK_ID"]=>
    int(39)
    ["PARENT_ID"]=>
    int(69357)
  }
  [69630]=>
  array(4) {
    ["SORT"]=>
    string(3) "101"
    ["ID"]=>
    int(69630)
    ["IBLOCK_ID"]=>
    int(39)
    ["PARENT_ID"]=>
    int(69357)
  }
  [69631]=>
  array(4) {
    ["SORT"]=>
    string(3) "102"
    ["ID"]=>
    int(69631)
    ["IBLOCK_ID"]=>
    int(39)
    ["PARENT_ID"]=>
    int(69357)
  }
}

array(4) {
  [69628]=>
  array(4) {
    ["SORT"]=>
    string(3) "500"
    ["ID"]=>
    int(69628)
    ["IBLOCK_ID"]=>
    int(39)
    ["PARENT_ID"]=>
    int(69357)
  }
  [69629]=>
  array(4) {
    ["SORT"]=>
    string(3) "500"
    ["ID"]=>
    int(69629)
    ["IBLOCK_ID"]=>
    int(39)
    ["PARENT_ID"]=>
    int(69357)
  }
  [69630]=>
  array(4) {
    ["SORT"]=>
    string(3) "101"
    ["ID"]=>
    int(69630)
    ["IBLOCK_ID"]=>
    int(39)
    ["PARENT_ID"]=>
    int(69357)
  }
  [69631]=>
  array(4) {
    ["SORT"]=>
    string(3) "102"
    ["ID"]=>
    int(69631)
    ["IBLOCK_ID"]=>
    int(39)
    ["PARENT_ID"]=>
    int(69357)
  }
}