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<?php
/**
* Piwik plugin.
* Adds tracking code on each page.
*/
/**
* Initialization function.
* It will be called when the plugin is loaded.
* This function can be used to return a list of initialization errors.
*
* @param $conf ConfigManager instance.
*
* @return array List of errors (optional).
*/
function piwik_init($conf)
{
$piwikUrl = $conf->get('plugins.PIWIK_URL');
$piwikSiteid = $conf->get('plugins.PIWIK_SITEID');
if (empty($piwikUrl) || empty($piwikSiteid)) {
$error = 'Piwik plugin error: ' .
'Please define PIWIK_URL and PIWIK_SITEID in the plugin administration page.';
return array($error);
}
}
/**
* Hook render_footer.
* Executed on every page redering.
*
* Template placeholders:
* - text
* - endofpage
* - js_files
*
* Data:
* - _PAGE_: current page
* - _LOGGEDIN_: true/false
*
* @param array $data data passed to plugin
*
* @return array altered $data.
*/
function hook_piwik_render_footer($data, $conf)
{
$piwikUrl = $conf->get('plugins.PIWIK_URL');
$piwikSiteid = $conf->get('plugins.PIWIK_SITEID');
if (empty($piwikUrl) || empty($piwikSiteid)) {
return $data;
}
// Free elements at the end of the page.
$data['endofpage'][] = '<!-- Piwik -->' .
'<script type="text/javascript">' .
' var _paq = _paq || [];' .
' _paq.push([\'trackPageView\']);' .
' _paq.push([\'enableLinkTracking\']);' .
' (function() {' .
' var u="//' . $piwikUrl . '/";' .
' _paq.push([\'setTrackerUrl\', u+\'piwik.php\']);' .
' _paq.push([\'setSiteId\', \'' . $piwikSiteid . '\']);' .
' var d=document, g=d.createElement(\'script\'), s=d.getElementsByTagName(\'script\')[0];' .
' g.type=\'text/javascript\'; g.async=true; g.defer=true; g.src=u+\'piwik.js\'; s.parentNode.insertBefore(g,s);' .
' })();' .
'</script>' .
'<noscript><p><img src="//' . $piwikUrl . '/piwik.php?idsite=' . $piwikSiteid . '" style="border:0;" alt="" /></p></noscript>' .
'<!-- End Piwik Code -->';
return $data;
}
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