User:Simon Moon/AdSense Extension

$wgAdSenseAdClient = "pub-XXXXXXXXXXXXXXXX";
require_once("$IP/extensions/AdSense/AdSense.php");

<?php
 
/**
 * Google AdSense MediaWiki extension
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or 
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 *
 * 
 * Installation:
 * 
 * Copy all of this into a new file. Call it "AdSense.php" and upload it to your
 * exentions directory, in a Folder called "AdSense".
 * Optional: You can lock the ad client id to a predefined one in the settings
 * to prevent others from placing their client code into your wiki. To do this
 * simply add the following line ABOVE the require_once statement for inclusion
 * of the extension, in your LocalSettings.php and replace the pub-XXX with your
 * own client id:
 * $wgAdSenseAdClient = "pub-XXXXXXXXXXXXXXXX";
 * Edit your LocalSettings.php and place at the end of it this line:
 * require_once("$IP/extensions/AdSense/AdSense.php");
 * The extension is now installed and can be used.
 *
 * 
 * Usage:
 * Simply add the following code to your wiki, where you want the ad to show up.
 * To You can see the syntax is very simple. The field names are the same as
 * google gives you on their codes, but you have to remove the "google_" in
 * front of it and remove all _ characters too. So "google_ad_client" becomes
 * "adclient" as an example. This extension was made to work with the alternate
 * ad feature (including the solid color) and the new referal ads as well. It is
 * not meant to be used for searches.
 *
 * <adsense
 *  adclient="pub-XXXXXXXXXXXXXXXX"
 *  adwidth="728"
 *  adheight="90"
 *  adformat="728x90_as"
 *  adtype="text_image"
 *  adchannel=""
 *  colorborder="FFFFFF"
 *  colorbg="FFFFFF"
 *  colorlink="0000FF"
 *  colortext="000000"
 *  colorurl="008000"
 * />
 *
 *
 * Special Thanks:
 * Naoise Golden Santos for a very first rough version.
 * Mike Dillon for an updated version, which laied the ground work.
 *
 * @category   Wiki
 * @package    wiki
 * @author     Christian Riesen
 * @copyright  2007 Christian Riesen
 * @link       http://www.mediawiki.org/wiki/User:Simon_Moon/AdSense_Extension
 * 
 */
 
// Check to make sure we're actually in MediaWiki.
if (!defined('MEDIAWIKI'))
{
        echo 'This file is part of MediaWiki. It is not a valid entry point.';
        exit(1);
}
 
/*
 * Include parser function and parser credits
 */
$wgExtensionFunctions[] = 'wfAdsense';
 
$wgExtensionCredits['parserhook'][] = array(
        'name' => 'Google AdSense',
        'description' => 'Shows google ads (ad unit, link unit, referals) inside the wiki in a safe way',
        'author' => 'Christian Riesen',
        'url' => 'http://www.mediawiki.org/wiki/User:Simon_Moon/AdSense_Extension'
);
 
/**
 * Loading parser function
 */
function wfAdsense()
{
    global $wgParser;
 
    // registers the <adsense> extension with the WikiText parser
    $wgParser->setHook('adsense', 'renderAdsense');
}
 
/**
 * Does all the magic. See the comments above for details on how to use it.
 */
function renderAdsense($input, $args, &$parser)
{
    global $wgAdSenseAdClient;
    $params = array(
        "adclient" => "ad_client",
        "adwidth" => "ad_width",
        "adheight" => "ad_height",
        "adformat" => "ad_format",
        "adtype" => "ad_type",
        "adchannel" => "ad_channel",
        "colorborder" => "color_border",
        "colorbg" => "color_bg",
        "colorlink" => "color_link",
        "colortext" => "color_text",
        "colorurl" => "color_url",
        "cpachoice" => "cpa_choice",
        "alternatecolor" => "alternate_color",
        "alternateadurl" => "alternate_ad_url",
    );
 
                if (count($args) > 1)
                {
            $output  = "<script type=\"text/javascript\">";
 
            // Render parameters
            foreach ($params as $key => $param) {
                if (!isset($args[$key])) {
                    // Error on missing param?
                    continue;
                }
 
                // if this variable is set, it will always replace whatever the input might be before this
                if ($param == "ad_client" AND $wgAdSenseAdClient)
                {
                        $args[$key] = $wgAdSenseAdClient;
                }
 
                $output .= "google_$param = \"";
                $output .= preg_replace('/([\\\\"])/', '\\\\$1', $args[$key]);
                $output .= "\"; ";
            }
 
            $output .= "</script>";
            $output .= "<script type=\"text/javascript\"";
            $output .= " src=\"http://pagead2.googlesyndication.com/pagead/show_ads.js\">";
            $output .= "</script>";
                }
 
                else
                {
                        $output = "Google AdSense Extension: Fatal error, not enough parameters. <pre>".var_export($args,true)."</pre>";
                }
    return $output;
}