PHP Nested foreach loop, how to affect (parent?) - php

Question

I have a nested foreach loop running through categories in a database. When the user is viewing a category the category ID is set and that menu item gets it's class set as "active".
The issue I'm having is when a user is viewing a subcategory, I still need it's PARENT to be set to active.
// Run through category ID's and output info
foreach ($GLOBALS['AKB_CLASS_HELPER']->tree->nodesByPid[$catid] as $rowid) {
$row = $GLOBALS['AKB_CLASS_HELPER']->catsById[$rowid];
//Check to see if user has access
if (($accessible_cats !== false) && (!in_array($row['categoryid'],$accessible_cats)) && ($row['security'] == "private")) {
continue;
}
// If we're viewing a category, output "active" as a class in the menu
if (isset($GLOBALS['CategoryId'])
&& ($GLOBALS['CategoryId']) == $row['categoryid']) {
$activeCat = "active";
} else {
$activeCat = "";
}
//Pass through global variables
$GLOBALS['Link'] = GetUrl('category', $row['categoryid']);
$GLOBALS['Text'] = $GLOBALS['AKB_CLASS_TEMPLATE']->DisablePlaceholders(strip_tags($row['name']));
$GLOBALS['Active'] = $activeCat;
$output .= $GLOBALS['AKB_CLASS_TEMPLATE']->GetSnippet('CategoryRowCell');
//If subcategories exist
if (isset($GLOBALS['AKB_CLASS_HELPER']->tree->nodesByPid[$rowid])
&& is_array($GLOBALS['AKB_CLASS_HELPER']->tree->nodesByPid[$rowid])
&& !empty($GLOBALS['AKB_CLASS_HELPER']->tree->nodesByPid[$rowid])) {
$output .= $GLOBALS['AKB_CLASS_TEMPLATE']->GetSnippet('CategoryGridHeaderSub');
//For every subcategory, output data
foreach ($GLOBALS['AKB_CLASS_HELPER']->tree->nodesByPid[$rowid] as $subrowid) {
$subrow = $GLOBALS['AKB_CLASS_HELPER']->catsById[$subrowid];
//Here's the part I can't get working. Need to output "active" to the PARENT id($row I believe)
if (isset($GLOBALS['CategoryId'])
&& ($GLOBALS['CategoryId']) == $subrow['categoryid']) {
$activeCat = "active";
} else {
$activeCat = "";
}
//Set Global Variables
$GLOBALS['Link'] = GetUrl('category', $subrow['categoryid']);
$GLOBALS['Text'] = $GLOBALS['AKB_CLASS_TEMPLATE']->DisablePlaceholders(strip_tags($subrow['name']));
$GLOBALS['Active'] = $activeCat;
$output .= $GLOBALS['AKB_CLASS_TEMPLATE']->GetSnippet('CategoryRowCellSub');
}
}
$output .= $GLOBALS['AKB_CLASS_TEMPLATE']->GetSnippet('CategoryGridFooterSub');
}
So the part I need to figure out is in the nested foreach loop, how can I affect the parent ID or something of the like.
Current Output when viewing parents(Working perfectly)
<li class="categoryItem active">Parent 1
<ul class="categorySubList">
<li class="categorySubItem"><a class="categorylink" href="/categories/Parent+1/Subcategory+1/">Subcategory 1</a></li>
<li class="categorySubItem "><a class="categorylink" href="/categories/Parent+1/Subcategory+2/">Subcategory 2</a></li>
</ul>
Current Output when viewing children(not working)
<li class="categoryItem">Parent 1<!--this list item needs to be active-->
<ul class="categorySubList">
<li class="categorySubItem active"><a class="categorylink" href="/categories/Parent+1/Subcategory+1/">Subcategory 1</a></li>
<li class="categorySubItem "><a class="categorylink" href="/categories/Parent+1/Subcategory+2/">Subcategory 2</a></li>
</ul>