Simplest way of obtaining MtGox exchange rate via an API?

MA5H3D

member

Activity: 99

Merit: 10

There might be a better way to do it, but i've tested it and this works:

Two pages, change the refresh interval in index.php

Page 1 = index.php -

      Bitcoin Price

Wait 10 Seconds..

Page 2 = gox.php -

header('Cache-Control: no-cache, no-store, must-revalidate'); // HTTP 1.1.
header('Pragma: no-cache'); // HTTP 1.0.
header('Expires: 0'); // Proxies.

$data = file_get_contents("https://data.mtgox.com/api/2/BTCUSD/money/ticker_fast");
$data = json_decode($data, true);
$spot_last = $data['data']['last']['value'];
print_r($spot_last);
?>

Try That.

MA5H3D

member

Activity: 99

Merit: 10

Is it being cached? I haven't tested it but try this:

header('Cache-Control: no-cache, no-store, must-revalidate'); // HTTP 1.1.
header('Pragma: no-cache'); // HTTP 1.0.
header('Expires: 0'); // Proxies.

$data = get_content("https://data.mtgox.com/api/2/BTCUSD/money/ticker");

// If that doesn't work (old) try: file_get_contents
// $data = file_get_contents("https://data.mtgox.com/api/2/BTCUSD/money/ticker");

$data = json_decode($data, true);

$spot_last = $data['data']['last']['value'];

print_r($spot_last);
?>

NLNico

legendary

Activity: 1876

Merit: 1295

DiceSites.com owner

See here the unofficial documentation about ticker_fast: https://bitbucket.org/nitrous/mtgox-api/overview#markdown-header-moneyticker_fast

Should be data.last.value and there is only a 1 second cache. Make sure it's not the browser that cached it or something? Because for me it is changing just fine (compared to bitcoinity, of course if there is no trade for a minute.. :p)

knocte

newbie

Activity: 44

Merit: 0

If it's data.last.value, why doesn't it change often? I've been sitting here refeshing the page for 2 minutes and that value is still at 111.04358.

MA5H3D

member

Activity: 99

Merit: 10

Quote from: knocte on May 05, 2013, 08:38:25 AM

But you're extracting buy/sell, not the exchange rate of the last trade.

I think the last sell is just "last", so:

$spot_last = $data['data']['last']['value'];

daybyter

legendary

Activity: 965

Merit: 1000

I wrote some Javascript for btc-e, that could be converted to mtgox with minimal modifications:

https://bitcointalksearch.org/topic/collab-for-phonegap-app-for-btc-e-135392

It fetches the depth in an infinite loop and displays the depth.

knocte

newbie

Activity: 44

Merit: 0

But you're extracting buy/sell, not the exchange rate of the last trade.

MA5H3D

member

Activity: 99

Merit: 10

I'm not sure about "ticker_fast" but I use this and refresh with jQuery:

$data = get_content("https://data.mtgox.com/api/2/BTCUSD/money/ticker");

// If that doesn't work (old) try: file_get_contents
// $data = file_get_contents("https://data.mtgox.com/api/2/BTCUSD/money/ticker");

$data = json_decode($data, true);

$spot_sell = $data['data']['sell']['value'];
$spot_buy = $data['data']['buy']['value'];

print_r($spot_sell);
// or
// print_r($spot_buy);
?>

knocte

newbie

Activity: 44

Merit: 0

Hey guys,

I want to do a simple app that refreshes every minute to tell me the current exchange rate by Mtgox but I have a problem interpreting the JSON that some APIs return:

- Mtgox's fast ticker returns [this JSON][1]. The question is, what's the value that I have to retrieve? There are a lot and I don't understand them, and I don't find proper docs. (Some people say it's simply the data.last.value element of that JSON, but that doesn't seem to change overtime! unless it returns cached responses of more than 1 minute Sad

wasn't the "fast ticker" supposed to be super fast?)

- Bitcoincharts' API has the [Markets Data endpoint][2], and it returns the market I want under the symbol "mtgoxUSD", however it tells me the date time of latest trade, the last buy/ask, but doesn't tell me **the exchange rate of the latest trade**.

Am I missing something?
Thanks

[1]: http://data.mtgox.com/api/2/BTCUSD/money/ticker_fast
[2]: http://bitcoincharts.com/about/markets-api/

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