Steam nivel php

<?php

error_reporting(0);
$usuario = $_GET["usuario"];
$page= file_get_contents("https://steamcommunity.com/id/$usuario");



echo"Nivel: ";
$steamNivel = explode ('<span class="friendPlayerLevelNum">', $page);
$steamNivel = explode ('</span>', $steamNivel[1]);

echo $steamNivel[0];

?>