<?php

function api_query($method, array $req = array()) {
        // API settings
        $key = '5320375ed2ce85577d1a40fea5084f7973036197'; // your API-key
        $secret = '4a41cd0a1b4f16b2b1789f02e19d17bca11ac8a672f68b57f1eec92b93e19e27fad47165bddfee00'; // your Secret-key

        $req['method'] = $method;
        $mt = explode(' ', microtime());
        $req['nonce'] = $mt[1];

        // generate the POST data string
        $post_data = http_build_query($req, '', '&');

        $sign = hash_hmac("sha512", $post_data, $secret);

        // generate the extra headers
        $headers = array(
                'Sign: '.$sign,
                'Key: '.$key,
        );

        // our curl handle (initialize if required)
        static $ch = null;
        if (is_null($ch)) {
                $ch = curl_init();
                curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
                curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; Cryptsy API PHP client; '.php_uname('s').'; PHP/'.phpversion().')');
        }
        curl_setopt($ch, CURLOPT_URL, 'https://www.cryptsy.com/api');
        curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);

        // run the query
        $res = curl_exec($ch);

        if ($res === false) throw new Exception('Could not get reply: '.curl_error($ch));
        $dec = json_decode($res, true);
        if (!$dec) throw new Exception('Invalid data received, please make sure connection is working and requested API exists');
        return $dec;
}


///////////////////////////////////////////////////////////////////////
//  Function: xmlspecialchars(string $text)
//
//  Wraps htmlspecialchars and makes it work for xml
//  Does the following replacement:
//    <       =>     &lt;
//    >       =>     &gt;
//    "       =>     &quote;
//    '       =>     &apos;
//    &       =>     &amp;
///////////////////////////////////////////////////////////////////////
function xmlspecialchars($text) {
    return str_replace('&#039;', '&apos;', htmlspecialchars($text, ENT_QUOTES, 'UTF-8'));
}




// take an array and return an xml formatted string which represents it
function _array_to_xml($array, $num_prefix = "num_") {
    $return = '';

    if (!is_array($array)) {
        return xmlspecialchars($array);
        //return html_entities($array);
    }
    else {

        foreach($array as $key=>$val){
            if (is_numeric($key)) { // can't have an element name that's numeric
                $return .= "\n" . _array_to_xml($val, "num_" . $num_prefix);
            }
            else {
                // FIXME: JC: if we wanted to include attributes in the tags, this is an example of how we might do that... it would get messy to construct
                //            the input arrays in such a way that made sense, however ... will have to think about it.
                //$tag_begin = preg_replace("/_::(\d)+::$/"," id=\"$1\"",$key); // slight hack to get xml output formatted correctly
                //$tag_end = preg_replace("/_::(\d)+::$/","",$key); // slight hack to get xml output formatted correctly
                //$return .= str_repeat(" ",strlen($num_prefix)) . "<".$tag_begin.">"._array_to_xml($val, "num_" . $num_prefix)."</".$tag_end.">\n";

                // FIXME: (jc) - the hack below will break JSON output if JSON format is chosen, need to implement similar logic here that we use in the
                //        json converter function below
                $key = preg_replace("/_::(\d)+::$/", "", $key, -1, $replacement_count); // slight hack to get xml output formatted correctly
                if ($replacement_count) {
                    $return .= str_repeat(" ",strlen($num_prefix)) . "<".$key.">\n"._array_to_xml($val, "num_" . $num_prefix)."</".$key.">\n";
                }
                else {
                    $return .= str_repeat(" ",strlen($num_prefix)) . "<".$key.">"._array_to_xml($val, "num_" . $num_prefix)."</".$key.">\n";
                }
            }
        }
    }
    if (!empty($return)) {
        return "$return\n" . str_repeat(" ",strlen($num_prefix) - 4);
    }
}

// function defination to convert array to xml
function array_to_xml($array, &$xml_array) {
    foreach($array as $key => $value) {
        if(is_array($value)) {
            if(!is_numeric($key)){
                $subnode = $xml_array->addChild("$key");
                array_to_xml($value, $subnode);
            }
            else{
                $subnode = $xml_array->addChild("item$key");
                array_to_xml($value, $subnode);
            }
        }
        else {
            $xml_array->addChild("$key","$value");
        }
    }
}

// Function definition to convert string dates to unix time
function convertDates($array) {
    foreach($array as $key=>$data) {
        if (is_array($data)) {
            convertDates($data);

        } elseif(is_object($data)) {
            convertDates($data);

        } else {
            echo "Key: ".$key." Data: ".$data."<br />";

        }
    }
}


//$result = api_query("getinfo");

//$result = api_query("getmarkets");

//$result = api_query("mytransactions");

//$result = api_query("markettrades", array("marketid" => 26));

// Quark Orderbook
$result = api_query("marketorders", array("marketid" => 71));

//$result = api_query("mytrades", array("marketid" => 26, "limit" => 1000));

//$result = api_query("allmytrades");

//$result = api_query("myorders", array("marketid" => 26));

//$result = api_query("allmyorders");

//$result = api_query("createorder", array("marketid" => 26, "ordertype" => "Sell", "quantity" => 1000, "price" => 0.00031000));

//$result = api_query("cancelorder", array("orderid" => 139567));

//$result = api_query("calculatefees", array("ordertype" => 'Buy', 'quantity' => 1000, 'price' => '0.005'));

//echo "<pre>".print_r($result, true)."</pre>";

convertDates($result);

// initializing or creating array
//$array = array(your array data);

// creating object of SimpleXMLElement
$xml_result = new SimpleXMLElement("<?xml version=\"1.0\"?><root></root>");

// function call to convert array to xml
array_to_xml($result,$xml_result);

//print
//print $xml_result->asXML();

//saving generated xml file
$xml_result->asXML('test.xml');






//$xml = new DOMDocument();
//$xml = new SimpleXMLElement('<root/>');
//array_walk_recursive($result, array ($xml, 'addChild'));
//array_walk($result, array ($xml, 'addChild'));
//print $xml->asXML();

//$xml->asXML('test.xml');
//$xml->save("test.xml");

//$xml = new SimpleXMLElement('<root/>');
//array_walk_rescursive($result, array ($xml, 'addChild'));
//$xml = new DOMDocument();
//$xml_album = $xml->createElement("Album");
//$xml_track = $xml->createElement("Track");
//$xml_album->appendChild( $xml_track );
//$xml->appendChild( $xml_album );


//$xml = _array_to_xml($result);

//print $xml->asXML();
//$xml = new SimpleXMLElement('<root/>');
//$xml = _array_to_xml($result);
//print $xml;
//print $xml->asXML();

//$xml->asXML('test.xml');
//$xml->save("test.xml");