<?phptry {
$opts = array(
    'http' => array(
        'user_agent' => 'PHPSoapClient'
    )
);
$context = stream_context_create($opts);

$wsdlUrl = 'http://ws.portaledu.com.br:8051/wsConsultaSQL/MEX?wsdl';
$soapClientOptions = array(
    "login"      => "XxXxXxXx",
    "password"  => "XxXxXxXxX",
    "stream_context" => $context,
    "cache_wsdl" => WSDL_CACHE_NONE
);

$client = new SoapClient($wsdlUrl, $soapClientOptions);

}
catch(Exception $e) {
    echo $e->getMessage();
}