Erro

Tenho o seguinte codigo

	<? require "setidioma.php";

 $dom = new DOMDocument('1.0','utf-8');
	$dom->load('financeiro/moedas.xml');
	$rates = array();
	$xpath = new DOMXPath($dom);
	foreach($xpath->query('//rate') as $rate) {
	$rates[ $rate->getAttribute('id') ] = $rate->getElementsByTagName('Rate')->item(0)->nodeValue;
	}

	?>
	<div class="row">
	<?php $my = new MySQLiConnection();
	$sql = $my->query ("Select * From produtos Order By nome");
	$pedido = $_GET["pedido"];
	echo "<p>Total de produtos: <strong>".$sql->num_rows."</strong></p><br />";

	echo "
 ";
	while ($x = $sql->fetch_object())
	{

	echo "
	<div class=\"col-md-3\">
	<div class=\"c-service\">
	<p class=\"service-image m-animated\"><img src=\"fotos/".$x->foto.".jpg\" alt=\"".htmlentities($x->nome)."\"></p>
	<div class=\"service-content\">
	<h3>".htmlentities($x->nome)."</h3>
	<h3><div class=\"wrapperu\">
	<b>R$ ".htmlentities($x->preco)."</b>
	<div class=\"tooltip\">
	<ul>
	<li><h4>Pague na sua moeda:</h4></li>
	<li>".$texto['valordollar']."".nl2br(htmlentities($x->preco*$rates[BRLUSD]))."</li>
	<li>".$texto['valoreuro']."".nl2br(htmlentities($x->preco*$rates[BRLEUR]))."</li>
	</ul>
	</div>
	</div></h3>
	<p><b>Ref.:</b> ".nl2br(htmlentities($x->descricao))."</p>
	<p><a href=\"?area=carrinho&acao=adicionar&id=".$x->id."&pedido=".$pedido."\" class=\"c-button m-outline\"><i class=\"fa fa-plus\"></i></a><img src=\"images/esp.png\" /><a href=\"?area=carrinho&acao=remover&id=".$x->id."&pedido=".$pedido."\" onclick=\"return ConfirmarExclusaoProduto()\" class=\"c-button m-outline m-color-3\"><i class=\"fa fa-times\"></i></a></p>
 </div>
 </div>
 </div>
 ";

 }

 ?>
 </div>

Com o seguinte erro:

Notice: Use of undefined constant BRLUSD - assumed 'BRLUSD' in/home/storage/e/4a/40/.../public_html/..../produtos.php