Dash Values for MediaWiki

By Alexandre Devilliers (Made for fr.wiki.dashninja.pl and en.wiki.dashninja.pl) https://github.com/elbereth/DarkcoinValue

Retrieve values for BTC/DASH (via CryptoAPI on Poloniex, Cryptsy and C-Cex). Can also retrieve value against EUR fiat (via Kraken)

Requirement:

Disable cache on the pages where this is used, or it will not update until the cache expires. You can use MagicNoCache plugin for this purpose.
apc or apcu php extensions (this will be dropped in future versions)
intl extension (to format numbers)

Optional:

KrakenAPIClient.php from Kraken (https://github.com/payward/kraken-api-client) for EUR values

Install:

Go to your MediaWiki extensions sub-folder (ex: cd /home/mediawiki/www/extensions/)
Get Dash Value from github:

git clone https://github.com/elbereth/DashValue.git
This should have created a folder DashValue in your extensions sub-folder
Optional: Go to the Dash Value include subfolder and get KrakenAPIClient.php:

wget https://raw.githubusercontent.com/payward/kraken-api-client/master/php/KrakenAPIClient.php

Configuration:

Add the following line at the end of your LocalSettings.php file:

  require_once("$IP/extensions/DashValue/DarkcoinValues.php" );

Here are some parameters to setup:

// Available values:
//   USD/DASH - From CryptoAPI (Average)
//   DASH/BTC - From CryptoAPI (Average)
//   BTC/DASH - From CryptoAPI (Average)
//   EUR/BTC - From KrakenAPI
//   EUR/DASH - From CryptoAPI+KrakenAPI
//   LastRefresh - Indicate the last refresh date/time for values
// [Default is USD/DASH]
$wgDashValuesDefault = 'USD/DASH';

// If false do not use KrakenAPI (all EUR values not available)
// Set to false if you don't use EUR values, it will speed up the queries
// [Default to False if KrakenAPIClient.php is not installed]
// [           True if installed]
$wgDashValuesUseKrakenAPI = false;

// Locale to use to format decimals
// [Default is en_EN for English]
$wgDashValuesFormatLocale = 'en_EN';

// Refresh cache every x seconds (is negative or 0 it will always fetch = SLOW)
// [Default is 3600]
$wgDashValuesFetchInterval = 3600;

From your pages in the Wiki:

<dashvalue value="BTC/DASH" />
<dashvalue value="DASH/BTC" />
<dashvalue value="USD/DASH" />
<dashvalue value="EUR/BTC" />
<dashvalue value="EUR/DASH" />
<dashvalue value="LastRefresh" />

History:

v1.1.0 (2015-04-08)

Rebranded to Dash

v1.0.5 (2014-04-18)

Added fallback to not use average DASH/BTC value when 0. It will use the direct value (in that order) from: Cryptsy, Ccex or Poloniex (Unless the value is equal to 0 or 1)
Added fallback to cached value when CryptoAPI fails
Added fallback to cached value when Kraken API raises an exception

v1.0.4 (2014-04-07)

Updated readme for needed intl extension
Added internationalization (for the extension description)
Added URL in description (toward github)
Value values are now case insensitive (usd/DASH will work for example)
KrakenAPI is now optional (extension will work without includes/KrakenAPIClient.php)

v1.0.3 (2014-04-07)

Added much needed exception checking on KrakenAPI call

v1.0.2 (2014-04-02)

Added caching via APC/APCU (also used as fallback when query failed)

v1.0.0 (2014-03-11)

Initial working version (used on darkcoin.fr)

elbereth/DashValue