Print Page - Help with getting started with mtgox api request

Hello,

I want to create a very simple php based interface to display data from Mtgox api. I don't like their trading interface, so I want to create a web page to arrange the displays to my liking.

The link for the unofficial api documentation https://bitbucket.org/nitrous/mtgox-api/overview (https://bitbucket.org/nitrous/mtgox-api/overview)

As of now, I am stuck at the very first step of being able to retrieve data and display the data using the available example php code. The code is unable to retrieve a very basic data dump. Could someone give an working example to get me started. I am trying to implement mtgox api version 2. The only code that I modified to the standard code example are the path and the base definitions (highlighted in bold in the code below)

Thank you

Code:

<?php
 
function mtgox_query($path, array $req = array()) {
	// API settings
	$key = 'my valid key';
	$secret = 'my secret code';
 
	// generate a nonce as microtime, with as-string handling to avoid problems with 32bits systems
	$mt = explode(' ', microtime());
	$req['nonce'] = $mt[1].substr($mt[0], 2, 6);
 
	// generate the POST data string
	$post_data = http_build_query($req, '', '&');
 
	$prefix = '';
	if (substr($path, 0, 2) == '2/') {
		$prefix = substr($path, 2)."\0";
	}
 
	// generate the extra headers
	$headers = array(
		'Rest-Key: '.$key,
		'Rest-Sign: '.base64_encode(hash_hmac('sha512', $prefix.$post_data, base64_decode($secret), true)),
	);
 
	// our curl handle (initialize if required)
	static $ch = null;
	if (is_null($ch)) {
		$ch = curl_init();
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MtGox PHP client; '.php_uname('s').'; PHP/'.phpversion().')');
	}
	curl_setopt($ch, CURLOPT_URL, 'https://data.mtgox.com/api/2/'.$path); //Base URL
	curl_setopt($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;
}
 
// example 1: get infos about the account, plus the list of rights we have access to
var_dump(mtgox_query('BTCUSD/money/ticker'));// PATH
 
// old api (get funds)
//var_dump(mtgox_query('0/getFunds.php'));
 
// trade example
// var_dump(mtgox_query('0/buyBTC.php', array('amount' => 1, 'price' => 15)));

I run this code on a PC with xampp installed. The output error is

Code:

array(3) { ["result"]=> string(5) "error" ["error"]=> string(45) "Identification required to access private API" ["token"]=> string(29) "login_error_invalid_rest_sign" }

Bitcoin Forum

Economy => Service Discussion => Topic started by: bittencoin on April 15, 2013, 02:13:19 AM