function ad_weight_percent_select_ad in Advertisement 5.2

Same name and namespace in other branches

1. 5 weight/percent/ad_weight_percent.inc \ad_weight_percent_select_ad()
2. 6.3 weight/percent/ad_weight_percent.inc \ad_weight_percent_select_ad()
3. 6 weight/percent/ad_weight_percent.inc \ad_weight_percent_select_ad()
4. 6.2 weight/percent/ad_weight_percent.inc \ad_weight_percent_select_ad()
5. 7 weight/percent/ad_weight_percent.inc \ad_weight_percent_select_ad()

@file A plug in for the ad.module, providing a percentage based weighting mechanism for the random selection of ads.

Copyright (c) 2007. Jeremy Andrews <jeremy@kerneltrap.org>. All rights reserved.

File

weight/percent/ad_weight_percent.inc, line 12

A plug in for the ad.module, providing a percentage based weighting mechanism for the random selection of ads.

Code

function ad_weight_percent_select_ad($ads, $quantity, $invalid) {
  $tid = NULL;
  if (adserve_variable('tids')) {
    $id = adserve_variable('tids');
    $tids = explode(',', $id);

    // A group can only be comprised of one tid.  If multiple tids are defined,
    // then we're not working with a group.
    if (sizeof($tids) == 1) {
      $tid = $tids[0];
    }
  }
  else {
    if (!adserve_variable('nids')) {

      // The default group.
      $tid = 0;
    }
  }

  // Only do something if we're currently processing a specific ad group.
  if ($tid !== NULL) {

    // TODO: The percentage information needs to be stored in the file cache,
    // as obviously we don't want to bootstrap the database layer and perform
    // a query at this point.
  }
}