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Author Topic: Help with getting started with mtgox api request  (Read 2463 times)
bittencoin
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April 15, 2013, 02:13:19 AM
 #1

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

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], 26);
 
// generate the POST data string
$post_data http_build_query($req'''&');
 
$prefix '';
if (substr($path02) == '2/') {
$prefix substr($path2)."\0";
}
 
// generate the extra headers
$headers = array(
'Rest-Key: '.$key,
'Rest-Sign: '.base64_encode(hash_hmac('sha512'$prefix.$post_database64_decode($secret), true)),
);
 
// our curl handle (initialize if required)
static $ch null;
if (is_null($ch)) {
$ch curl_init();
curl_setopt($chCURLOPT_RETURNTRANSFERtrue);
curl_setopt($chCURLOPT_USERAGENT'Mozilla/4.0 (compatible; MtGox PHP client; '.php_uname('s').'; PHP/'.phpversion().')');
}
curl_setopt($chCURLOPT_URL'https://data.mtgox.com/api/2/'.$path); //Base URL
curl_setopt($chCURLOPT_POSTFIELDS$post_data);
curl_setopt($chCURLOPT_HTTPHEADER$headers);
curl_setopt($chCURLOPT_SSL_VERIFYPEERFALSE);
 
// run the query
$res curl_exec($ch);
if ($res === false) throw new Exception('Could not get reply: '.curl_error($ch));
$dec json_decode($restrue);
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" }
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April 15, 2013, 02:25:39 AM
 #2

I hope it's not this but I assume you're using a valid API key and code where it says to?

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April 15, 2013, 05:57:38 AM
 #3

I hope it's not this but I assume you're using a valid API key and code where it says to?

I use the API key and secret code created from my account, not shown here of course. And did just switch them around just to be sure after you raised that possibility.

UPDATE:

I found the error/fix here https://bitcointalk.org/index.php?topic=164404.msg1845894#msg1845894
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