PHPCMS V9{loop subcat(0,0,0,$siteid) $r}如何解釋

PHPCMS V9{loop subcat(0,0,0,$siteid) $r}怎麼解釋？

{loop subcat(0,0,0,$siteid) $r}{/loop}

/**

* 擷取子欄目
* @param $parentid 父級id
* @param $type 欄目類型
* @param $self 是否包含本身 0為不包含
* @param $siteid 網站id
*/
function subcat($parentid = NULL, $type = NULL,$self = '0', $siteid = '') {
if (empty($siteid)) $siteid = get_siteid();
$category = getcache('category_content_'.$siteid,'commons');
foreach($category as $id=>$cat) {
if($cat['siteid'] == $siteid && ($parentid === NULL || $cat['parentid'] == $parentid) && ($type === NULL || $cat['type'] == $type)) $subcat[$id] = $cat;
if($self == 1 && $cat['catid'] == $parentid && !$cat['child']) $subcat[$id] = $cat;
}
return $subcat;
}

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