object(SimpleXMLElement)#1 (2) {
  ["@attributes"]=>
  array(1) {
    ["version"]=>
    string(4) "0.91"
  }
  ["channel"]=>
  object(SimpleXMLElement)#2 (7) {
    ["title"]=>
    string(18) "Banco de Guatemala"
    ["link"]=>
    string(26) "http://www.banguat.gob.gt/"
    ["description"]=>
    string(35) "Banco de Guatemala - Tipo de Cambio"
    ["language"]=>
    string(2) "es"
    ["lastBuildDate"]=>
    string(10) "12/09/2017"
    ["webMaster"]=>
    string(24) "webmaster@banguat.gob.gt"
    ["item"]=>
    object(SimpleXMLElement)#3 (2) {
      ["title"]=>
      string(18) "Fecha : 12/09/2017"
      ["description"]=>
      string(13) " TCR: 7.29200"
    }
  }
}
el varlor es ........:7.39