SOAP Class

/**
 * Helper class for converting
 */
class XmlElement {
    var $name;
    var $attributes;
    var $content;
    var $children;
};

/**
 * General class for web services
 */
class SoapWebServices {
    private $url; //url for web services
    private $client; // Soap global(class) object

    function __construct($url) {
        $this->url = $url;
        $this->client = new SoapClient($this->url, array("trace" => 1, "exception" => 0));
    }
    /**
     * Add Soap Header
     * @param stdClass object
     * @param string
     */
    public function add_header($header, $name) {
        $header = new SoapHeader($this->url, $name, $header, false);
        $this->client->__setSoapHeaders(array($header));
    }

    /**
     * @param  string   API Method that you want to call
     * @param  array    Arguments to pass into API
     * @param  string   Parent array for arguments
     * @return array    of objects generated from XML
     */
    public function call($func, $args, $parent_arg=NULL) {
        if (!parent_arg) $parent_arg = $func;
        $args = array($parent_arg => $args);
        try {
            $result = $this->client->__soapCall($func, $args, NULL);
        } catch (SoapFault $soap_fault) {
            return $soap_fault;
        }
        $result_func = $func.'Result';
        return $this->xml_to_object($result->$result_func->any);
    }
    /**
     * Get Last Request's XML
     * @return XML
     */
    public function __getLastRequest(){
        if (isset($this->client))
            return $this->client->__getLastRequest();
        else
            return NULL;
    }

    /**
     * Convert XML to PHP array of objects
     * @param  XML
     * @return array of objects
     */
    public function xml_to_object($xml) {
        $parser = xml_parser_create();
        xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
        xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1);
        xml_parse_into_struct($parser, $xml, $tags);
        xml_parser_free($parser);

        $elements = array();  // the currently filling [child] XmlElement array
        $stack = array();
        foreach ($tags as $tag) {
            $index = count($elements);
            if ($tag['type'] == "complete" || $tag['type'] == "open") {
                $elements[$index] = new XmlElement;
                $elements[$index]->name = $tag['tag'];
                $elements[$index]->attributes = isset($tag['attributes'])?$tag['attributes']:NULL;
                $elements[$index]->content = isset($tag['value'])?$tag['value']:NULL;
                if ($tag['type'] == "open") {  // push
                    $elements[$index]->children = array();
                    $stack[count($stack)] = &$elements;
                    $elements = &$elements[$index]->children;
                }
            }
            if ($tag['type'] == "close") {  // pop
                $elements = &$stack[count($stack) - 1];
                unset($stack[count($stack) - 1]);
            }
        }
        return $elements[0];  // the single top-level element
    }
}

/**
 * High level web services class for "Travel Security Web Services"
 */
class TravelSecurityWebServices extends SoapWebServices {
    private $ts_url = "https://webservices.travelsecurity.com/Default.asmx?WSDL";
    private $username = "asd";
    private $password    = "asd";
    private $membership = "asd";

    function __construct(){
        parent::__construct($this->ts_url);
        // TODO:
        // 1. create configuration page in drupal CMS
        // 2. Remove hardcoded credentials and pull them from DB here
    }

    public function GetCountryRiskRatings(){
        $args = array(
            "Username" => $this->username,
            "Password" => $this->password,
        );
        return $this->call('GetCountryRiskRatings', $args);
    }

    public function GetCountryMedicalRiskRatings($language = 1){
        $args = array(
            "Username" => $this->username,
            "Password" => $this->password,
            "LanguageId" => $language,
        );
        return $this->call('GetCountryMedicalRiskRatings', $args);
    }

    public function GetArticles($language = 1, $country = 30, $tabname = "risk summary"){
        $args = array(
            "Username" => $this->username,
            "Password" => $this->password,
            "languageID" => $language,
            "CountryID" => $country,
            "tabname" => $tabname,
        );
        return $this->call('GetArticles', $args);

    }
}

/**
 * High level class for "International SOS Web Services"
 */
class InternationalSOSWebServices extends SoapWebServices {
    private $isos_url   = "https://www.internationalsos.com/ISOS.ServiceCluster.Location.CountryData.WebServices2/CountryGuidesWebService.asmx?WSDL";
    private $username = "asd";
    private $password    = "asd";
    private $membership = "asd";

    function __construct(){
        parent::__construct($this->isos_url);
        // TODO:
        // 1. create configuration page in drupal CMS
        // 2. Remove hardcoded credentials and pull them from DB here
    }

    public function addHeader(){
        $header = new stdClass();
        $header->MembershipNumber = $this->membership;
        $header->UserName = $this->username;
        $header->Password = $this->password;
        parent::add_header($header, "ISOSAuthenticationHeader");
    }

    public function GetCountryGeneralSiteContent($language, $country){
        $this->addHeader();

        $args = new stdClass();
        $args->GeneralSiteContentParam = new stdClass();
        $args->GeneralSiteContentParam->LanguageID = $language;
        $args->GeneralSiteContentParam->CountryID = $country;

        return $this->call('GetCountryGeneralSiteContent', $args, "GeneralSiteContentParam");
    }

    public function GetCountryMedicalSummary($language, $country){
        $this->addHeader();

        $args = new stdClass();
        $args->MedicalSummaryParam = new stdClass();
        $args->MedicalSummaryParam->LanguageID = $language;
        $args->MedicalSummaryParam->CountryID = $country;

        return $this->call('GetCountryMedicalSummary', $args, "MedicalSummaryParam");
    }
}