Fungsi getName() SimpleXML PHP

<?php
$xml=<<<XML
<?xml version="1.0" standalone="yes"?>
<cars>
  <car id="1">Xenia</car>
  <car id="2">Avanza</car>
  <car id="3">Jaaz</car>
</cars>
XML;

$sxe=new SimpleXMLElement($xml);
// Dapatkan nama elemen car
echo $sxe->getName() . "<br>";

// Cetak juga nama children dari elemen car
foreach ($sxe->children() as $child)
  {
  echo $child->getName() . "<br>";
  }
?>
  /* Output :
cars
car
car
car