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// Returns XML File and Format to browser
header('Content-type: application/xml');
echo file_get_contents('http://www.camara.gov.br/SitCamaraWS/Deputados.asmx/ObterDeputados');

// Returns XML Data as an Array
$file = file_get_contents('http://www.camara.gov.br/SitCamaraWS/Deputados.asmx/ObterDeputados');
$xml = simplexml_load_string($file) or die("Error: Cannot create object");
var_dump($xml->deputados);