Попробуйте так (писал для php 5.4):
[CODE]$arFilter = ['IBLOCK_ID' => 13,'IBLOCK_ACTIVE' => 'Y','GLOBAL_ACTIVE' => 'Y','INCLUDE_SUBSECTIONS' => 'Y','>LEFT_MARGIN'=> 1,'<RIGHT_MARGIN' => 390,
['LOGIC' => 'OR',['>DEPTH_LEVEL' => 1],['<DEPTH_LEVEL' => 5]]];[/CODE]
[CODE]$arFilter = ['IBLOCK_ID' => 13,'IBLOCK_ACTIVE' => 'Y','GLOBAL_ACTIVE' => 'Y','INCLUDE_SUBSECTIONS' => 'Y','>LEFT_MARGIN'=> 1,'<RIGHT_MARGIN' => 390,
['LOGIC' => 'OR',['>DEPTH_LEVEL' => 1],['<DEPTH_LEVEL' => 5]]];[/CODE]