Extension:MpDisqus

$wgMpDisqusWebsiteName = "insert_disqus_site_id_here";
$wgMpDisqusExclude = array("Main Page", "*:*");
require_once("$IP/extensions/MpDisqus/MpDisqus.php");

<?php
/**
 * Disqus Integration extension
 *
 * @file
 * @ingroup Extensions
 *
 * This file contains the main include file for the mpDisqus extension of
 * MediaWiki.
 *
 * Usage: Add the following line in LocalSettings.php:
 * require_once( "$IP/extensions/MpDisqus/MpDisqus.php" );
 *
 * @author Michael Platzer <michael.platzer@gmail.com>
 * @license GPL
 * @version 0.1
 */
 
// Check environment
if ( !defined( 'MEDIAWIKI' ) ) {
	echo( "This is an extension to the MediaWiki package and cannot be run standalone.\n" );
	die( -1 );
}
 
// Credits
$wgExtensionCredits['specialpage'][] = array(
	'name'				=> 'MpDisqus',
	'version'			=> '0.1',
	'author'			=> 'Michael Platzer',
	'description'    	=> 'Integrates Disqus commenting service',
	'descriptionmsg' 	=> 'mpdisqus-desc',
	'url'				=> 'http://www.mediawiki.org/wiki/Extension:MpDisqus'
);
 
// Disqus settings.
// "Website Name" field in Disqus basic settings for your site.
$wgMpDisqusWebsiteName = strtolower("");
 
// Add hooks
$wgHooks['SkinAfterContent'][] = 'onSkinAfterContent_AddMpDisqus1';
$wgHooks['SkinAfterBottomScripts'][] = 'onSkinAfterBottomScripts_AddMpDisqus2';
 
// Add messages
$dir = dirname( __FILE__ ) . '/';
$wgExtensionMessagesFiles['MpDisqus'] = $dir . 'MpDisqus.i18n.php';
 
// Helper method
function mpDisqusInArray($needle, $haystack) {
    # this function allows wildcards in the array to be searched
    foreach ($haystack as $value) {
        if (true === fnmatch($value, $needle)) {
            return true;
        }
    }
    return false;
}
 
 
// Event 'SkinAfterContent': Allows extensions to add text after the page content and article metadata.
// &$data: (string) Text to be printed out directly (without parsing)
// This hook should work in all skins. Just set the &$data variable to the text you're going to add.
// Documentation: \mediawiki-1.16.0\docs\hooks.txt 
function onSkinAfterContent_AddMpDisqus1(&$data) {
	global $wgMpDisqusWebsiteName, $wgMpDisqusExclude, $wgTitle, $wgRequest;
 
	if ($wgRequest->getVal('action', 'view') != "view") {
		return true;
	}
 
	if ($wgMpDisqusExclude != NULL && mpDisqusInArray($wgTitle->getFullText(), $wgMpDisqusExclude) == 1) {
		return true;
	}
 
	if ($wgMpDisqusWebsiteName == "") {
		echo('Please, set $wgMpDisqusWebsiteName in LocalSettings.php');
		die(1);
	} 
 
	$before = wfMsgForContent('mpdisqus-before');
	$after = wfMsgForContent('mpdisqus-after');	
	$data = $before . "<script type=\"text/javascript\">
//<![CDATA[
 	var disqus_developer = 0;
	var disqus_url = \"" . $wgRequest->getFullRequestURL() . "\";
	var disqus_title = \"" . $wgTitle->getText() . "\";	
//]]>
	</script>
	<br /><div id=\"disqus_thread\"></div><script type=\"text/javascript\" src=\"http://disqus.com/forums/" . $wgMpDisqusWebsiteName . "/embed.js\"></script><noscript><a href=\"http://disqus.com/forums/" . $wgMpDisqusWebsiteName . "/?url=ref\">View the discussion thread.</a></noscript><a href=\"http://disqus.com\" class=\"dsq-brlink\">blog comments powered by <span class=\"logo-disqus\">Disqus</span></a>" . $after;
	return true;
}
 
 
// Event 'SkinAfterBottomScripts': At the end of Skin::bottomScripts()
// $skin: Skin object
// &$text: bottomScripts Text
// Append to $text to add additional text/scripts after the stock bottom scripts.
// Documentation: \mediawiki-1.16.0\docs\hooks.txt 
function onSkinAfterBottomScripts_AddMpDisqus2($skin, &$text) {
	global $wgMpDisqusWebsiteName, $wgMpDisqusExclude, $wgTitle, $wgRequest;
 
	if ($wgRequest->getVal('action', 'view') != "view") {
		return true;
	}
 
	if ($wgMpDisqusExclude != NULL && mpDisqusInArray($wgTitle->getFullText(), $wgMpDisqusExclude) == 1) {
		return true;
	}
 
	if ($wgMpDisqusWebsiteName == "") {
		echo('Please, set $wgMpDisqusWebsiteName in LocalSettings.php');
		die(1);
	}
 
	$disqus_bottom_script = "<script type=\"text/javascript\">
//<![CDATA[
(function() {
	var links = document.getElementsByTagName('a');
	var query = '?';
	for(var i = 0; i < links.length; i++) {
	if(links[i].href.indexOf('#disqus_thread') >= 0) {
		query += 'url' + i + '=' + encodeURIComponent(links[i].href) + '&';
	}
	}
	document.write('<script charset=\"utf-8\" type=\"text/javascript\" src=\"http://disqus.com/forums/" . $wgMpDisqusWebsiteName . "/get_num_replies.js' + query + '\"></' + 'script>');
})();
//]]>
</script>";
	$text .= $disqus_bottom_script;
	return true;
}

<?php
/**
 * Internationalisation file for MpDisqus extension.
 *
 * @addtogroup Extensions
 */
 
$messages = array();
 
$messages['en'] = array(
	'mpdisqus-desc'             => 'Integrates Disqus commenting service',
	'mpdisqus-before'			=> '<h2>Share your opinion</h2>',
	'mpdisqus-after'			=> ''
);
 
$messages['fi'] = array(
	'mpdisqus-before'			=> '<h2>Jaa mielipiteesi</h2>',
	'mpdisqus-after'			=> ''
);
 
$messages['de'] = array(
	'mpdisqus-before'			=> '<h2>Teile deine Meinung mit</h2>',
	'mpdisqus-after'			=> ''
);