pierre@0: <?php
pierre@0: // $Id: ad_weight_percent.inc,v 1.1.2.2.2.2 2009/02/16 17:06:50 jeremy Exp $
pierre@0: 
pierre@0: /**
pierre@0:  * @file
pierre@0:  * A plug in for the ad.module, providing a percentage based weighting mechanism
pierre@0:  * for the random selection of ads.
pierre@0:  *
pierre@0:  * Copyright (c) 2007-2009.
pierre@0:  *  Jeremy Andrews <jeremy@tag1consulting.com>.
pierre@0:  */
pierre@0: 
pierre@0: function ad_weight_percent_select_ad($ads, $quantity, $invalid) {
pierre@0:   $tid = NULL;
pierre@0:   if (adserve_variable('tids')) {
pierre@0:     $id = adserve_variable('tids');
pierre@0:     $tids = explode(',', $id);
pierre@0:     // A group can only be comprised of one tid.  If multiple tids are defined,
pierre@0:     // then we're not working with a group.
pierre@0:     if (sizeof($tids) == 1) {
pierre@0:       $tid = $tids[0];
pierre@0:     }
pierre@0:   }
pierre@0:   else if (!adserve_variable('nids')) {
pierre@0:     // The default group.
pierre@0:     $tid = 0;
pierre@0:   }
pierre@0: 
pierre@0:   // Only do something if we're currently processing a specific ad group.
pierre@0:   if ($tid !== NULL) {
pierre@0:     // TODO: The percentage information needs to be stored in the file cache,
pierre@0:     // as obviously we don't want to bootstrap the database layer and perform
pierre@0:     // a query at this point.
pierre@0:   }
pierre@0: }