plugins/piwik/piwik.php

   1 <?php
   2 /**
   3  * Piwik plugin.
   4  * Adds tracking code on each page.
   5  */
   6
   7 /**
   8  * Initialization function.
   9  * It will be called when the plugin is loaded.
  10  * This function can be used to return a list of initialization errors.
  11  *
  12  * @param $conf ConfigManager instance.
  13  *
  14  * @return array List of errors (optional).
  15  */
  16 function piwik_init($conf)
  17 {
  18     $piwikUrl = $conf->get('plugins.PIWIK_URL');
  19     $piwikSiteid = $conf->get('plugins.PIWIK_SITEID');
  20     if (empty($piwikUrl) || empty($piwikSiteid)) {
  21         $error = 'Piwik plugin error: ' .
  22             'Please define PIWIK_URL and PIWIK_SITEID in the plugin administration page.';
  23         return array($error);
  24     }
  25 }
  26
  27 /**
  28  * Hook render_footer.
  29  * Executed on every page redering.
  30  *
  31  * Template placeholders:
  32  *   - text
  33  *   - endofpage
  34  *   - js_files
  35  *
  36  * Data:
  37  *   - _PAGE_: current page
  38  *   - _LOGGEDIN_: true/false
  39  *
  40  * @param array $data data passed to plugin
  41  *
  42  * @return array altered $data.
  43  */
  44 function hook_piwik_render_footer($data, $conf)
  45 {
  46     $piwikUrl = $conf->get('plugins.PIWIK_URL');
  47     $piwikSiteid = $conf->get('plugins.PIWIK_SITEID');
  48     if (empty($piwikUrl) || empty($piwikSiteid)) {
  49         return $data;
  50     }
  51
  52     // Free elements at the end of the page.
  53     $data['endofpage'][] = '<!-- Piwik -->' .
  54 '<script type="text/javascript">' .
  55 '  var _paq = _paq || [];' .
  56 '  _paq.push([\'trackPageView\']);' .
  57 '  _paq.push([\'enableLinkTracking\']);' .
  58 '  (function() {' .
  59 '    var u="//' . $piwikUrl . '/";' .
  60 '    _paq.push([\'setTrackerUrl\', u+\'piwik.php\']);' .
  61 '    _paq.push([\'setSiteId\', \'' . $piwikSiteid . '\']);' .
  62 '    var d=document, g=d.createElement(\'script\'), s=d.getElementsByTagName(\'script\')[0];' .
  63 '    g.type=\'text/javascript\'; g.async=true; g.defer=true; g.src=u+\'piwik.js\'; s.parentNode.insertBefore(g,s);' .
  64 '  })();' .
  65 '</script>' .
  66 '<noscript><p><img src="//' . $piwikUrl . '/piwik.php?idsite=' . $piwikSiteid . '" style="border:0;" alt="" /></p></noscript>' .
  67 '<!-- End Piwik Code -->';
  68
  69     return $data;
  70 }
  71