Piwik 2.8.1 发布，网站访问统计系统
Piwik 2.8.1 发布，此版本专注于系统可靠性和 bug 修复，7 位贡献者一共解决了 28 个 tickets。
安全修复
解决了旧版 IE 浏览器的一个 XSS 漏洞 security bug bounty program.
无任何重要数据库升级
同时改进了核心 APIs，更新了文档。
更多内容请看：
-> Check out this CHANGELOG.md file
List of 28 tickets closed in Piwik 2.8.1
#6470 Announce that Piwik will stop supporting PHP 5.3 soon [by @mattab]
#4996 Content Tracking, Banner tracking: track impressions, Clicks on any piece of content [by @tsteur, @mattab]
#6372 Allow admin users to customise the piwik.js code served by Piwik [by @mnapoli, @mattab]
#6432 Uncaught TypeError: undefined is not a function [by @tsteur]
#6384 Content-type set to text/plain when requesting &idSubtable [by @tsteur]
#6455 The initSession method has not been changed [by @burakcakirel, @diosmosis]
#6454 Warning: fread(): Length parameter must be greater than 0 in plugins/ScheduledReports/API.php on line 519 [by @diosmosis]
#6445 Check if a file was actually copied when copying a file [by @tsteur, @mattab]
#6440 Added events for Piwik update, enable/disable plugin and Plugin Settings update [by @mnapoli, @mattab]
#6481 Console command generate:report not geting all available dimensions [by @tsteur]
#6479 Events Pivot: reads only “from” from date range and fails. [by @diosmosis]
#6475 PHP Fatal error: Call to undefined method Piwik\Db\Adapter\Mysqli::fetch() in core/Tracker/Model.php on line 353 [by @mattab]
#6474 Notice: Undefined offset: 39 core/DataArray.php on line 121 [by @mattab]
#6466 Document how to enable Content Tracking by default using CustomTrackerJs
#6156 redirect /index.php/.whatever?… URLs to /index.php?… to avoid Content-Type browser bugs [by @mnapoli]
#6053 xss affecting IE6, IE7 and IE8
#6015 Pages Search Results: Error message + Graph with no Data [by @tsteur]
#6465 Php 5.6 “Automatically populating $HTTP_RAW_POST_DATA is deprecated” [by @mattab, @mnapoli]
#6461 CI icons: Use svg instead of png to get better image quality [by @PeterDaveHello, @mattab]
#6459 Removed tests for PHP 5.4 and 5.5. We only test for 5.3.3 and 5.6. [by @mnapoli]
#6452 Issues with Zend Mode message [by @tsteur, @diosmosis]
#6446 Extracted `Piwik::getJavascriptCode()` into a separate, non static class [by @mnapoli]
#6413 Reduce number of jobs in the Travis CI piwik/piwik build [by @tsteur]
#6123 Visitors in Real-time ecommerce order tooltip formatting [by @tsteur]
#6058 Keep composer.json and composer.lock synchronised at all times [by @mnapoli, @mattab]
#6482 [automatic translation update] Updated 209 strings in 3 languages (ja, tr, cs) [by @sgiehl]
Piwik是一套基于PHP5+MySQL技术构建的开源网站访问统计系统，前身是phpMyVisites。Piwik可以给你详细的统计信息，比如网页浏览人数，访问最多的页面，搜索引擎关键词等等流量分析功能。此外，它还采用了插件扩展及开放API架构，可以让用户根据 自已的实际需求创建更多的功能。
来自：http://www.oschina.net/news/56323/piwik-2-8-1