How do I create "Outer" and "Row" Templates

$output='<ul>';
$tpl='<li>[+name+] x [+quantity+]</li>';

	$items = array();
	$empty = true;
	foreach($order->lineItems as $item){
		$itemid = $item->id;
		$quantity = $item->qty;
		$realItem = $products[$itemid];
		$name = $realItem->name;
		$price = $realItem->price();
		$total = $realItem->price() * $quantity;
		$modx->setPlaceholder('quantity', $quantity);
		$modx->setPlaceholder('items', $items);
		$modx->setPlaceholder('price', $price);
		$modx->setPlaceholder('name', $name);
		$output.=$modx->mergePlaceholderContent($tpl);
		$empty = false;
	}
	$modx->setPlaceholder('total', $order->subtotal());
	$output.='<li>[+total+]</li></ul>';
	return $output;

<?php

//[!getMyItems? &outerTpl=`outerchunk` &rowTpl=`rowchunk`!]


 $output='no items';


	$items = array();
	$empty = true;
	$rowsoutput='';
	foreach($order->lineItems as $item){
		$itemid = $item->id;
		$quantity = $item->qty;
		$realItem = $products[$itemid];
		$name = $realItem->name;
		$price = $realItem->price();
		$total = $realItem->price() * $quantity;
		$rowph=array();
		$rowph['quantity']= $quantity;
		$rowph['price']=$price;
		$rowph['name']=$name;
		$rowsoutput.=$modx->parseChunk($rowTpl,$rowph,'[+','+]');
		$empty = false;
	}
	
	if ($rowsoutput !== ''){
		$outerph=array();
		$outerph['rowsoutput']=$rowsoutput;
		$outerph['total']=$order->subtotal();
		$output=$modx->parseChunk($outerTpl,$outerph,'[+','+]');
	}

	return $output;
?>

<li>[+name+] x [+quantity+]</li>

<ul>
[+rowsoutput+]	
<li>[+total+]</li>
</ul>	

<?php

//getdatas.php for blox


	$items = array();
	$empty = true;
	$rowsoutput='';
	foreach($order->lineItems as $item){
		$itemid = $item->id;
		$quantity = $item->qty;
		$realItem = $products[$itemid];
		$name = $realItem->name;
		$price = $realItem->price();
		$total = $realItem->price() * $quantity;
		$rowph=array();
		$rowph['quantity']= $quantity;
		$rowph['price']=$price;
		$rowph['name']=$name;
		$rows[]=$rowph;
	}

$bloxdatas['total']=$order->subtotal();
$bloxdatas['innerrows']['rowchunk']=$rows;

?>

[+innercounts.rowchunk:isnot=`0`:then=`
<ul>
[+innerrows.rowchunk+]	
<li>[+total+]</li>
</ul>:else=`no items`
`+]	

<li>[+name+] x [+quantity+]</li>

,'[+','+]'