private function zSignatureExists($dom)
    {
        $signature = $dom->getElementsByTagName('Signature')->item(0);
        if (! isset($signature)) {
            return false;
        }

        return true;
    }
private function zSignatureExists($dom)
    {
        $signature = $dom->getElementsByTagName('Signature')->item(0);
        if (! isset($signature)) {
            return false;
        }

        return true;
    }
private function zSignatureExists ( $ dom ) { $ signature = $ dom -> getElementsByTagName ( 'Signature' ) -> item ( 0 ) ; if ( ! isset ( $ signature ) ) { return false ; } return true ; }
signatureExists
Check se o xml possi a tag Signature.
@param DOMDocument $dom
@return bool
signatureExists Check se o xml possi a tag Signature .