Viewing file:  lib-view-direct.inc.php (4.16 KB) -rwxr-xr-x
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<?php // $Revision: 1.4 $
/************************************************************************/
/* phpAdsNew 2 */
/* =========== */
/* */
/* Copyright (c) 2001 by the phpAdsNew developers */
/* http://sourceforge.net/projects/phpadsnew */
/* */
/* 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. */
/************************************************************************/
// Set define to prevent duplicate include
define ('LIBVIEWDIRECT_INCLUDED', true);
/*********************************************************/
/* Get a banner */
/*********************************************************/
function phpAds_fetchBanner($what, $clientid, $context = 0, $source = '', $richmedia = true)
{
global $phpAds_config;
// Build preconditions
if (is_array ($context))
{
for ($i=0; $i < count($context); $i++)
{
list ($key, $value) = each($context[$i]);
{
switch ($key)
{
case '!=': $contextExclusive[] = $phpAds_config['tbl_banners'].'.bannerid <> '.$value; break;
case '==': $contextInclusive[] = $phpAds_config['tbl_banners'].'.bannerid = '.$value; break;
}
}
}
$where_exclusive = !empty($contextExclusive) ? implode(' AND ', $contextExclusive) : '';
$where_inclusive = !empty($contextInclusive) ? implode(' OR ', $contextInclusive) : '';
$precondition = sprintf("$where_inclusive %s $where_exclusive", (!empty($where_inclusive) && !empty($where_exclusive)) ? 'AND' : '');
$precondition = trim($precondition);
if (!empty($precondition))
$precondition = ' AND '.$precondition;
}
else
$precondition = '';
if ($clientid != 0)
$precondition .= " AND (".$phpAds_config['tbl_clients'].".clientid = $clientid OR ".$phpAds_config['tbl_clients'].".parent = $clientid) ";
if ($richmedia == false)
$precondition .= " AND (".$phpAds_config['tbl_banners'].".contenttype = 'jpeg' OR ".$phpAds_config['tbl_banners'].".contenttype = 'gif' OR ".$phpAds_config['tbl_banners'].".contenttype = 'png') ";
// Separate parts
$what_parts = explode ('|', $what);
for ($wpc=0; $wpc < sizeof($what_parts); $wpc++)
{
// Build the query needed to fetch the banners
$select = phpAds_buildQuery ($what_parts[$wpc], sizeof($what_parts), $precondition);
$res = phpAds_dbQuery($select);
if ($res)
{
if (phpAds_dbNumRows($res) > 0)
break; // Found banners, continue
}
}
// Build array for further processing...
$rows = array();
$prioritysum = 0;
while ($tmprow = phpAds_dbFetchArray($res))
{
// weight of 0 disables the banner
if ($tmprow['priority'])
{
$prioritysum += $tmprow['priority'];
$rows[] = $tmprow;
}
}
$maxindex = sizeof($rows);
while ($prioritysum && sizeof($rows))
{
$low = 0;
$high = 0;
$ranweight = ($prioritysum > 1) ? mt_rand(0, $prioritysum - 1) : 0;
for ($i=0; $i<$maxindex; $i++)
{
if (is_array($rows[$i]))
{
$low = $high;
$high += $rows[$i]['priority'];
if ($high > $ranweight && $low <= $ranweight)
{
if ($phpAds_config['acl'])
{
if (phpAds_aclCheck($rows[$i], $source))
{
// ACL check passed, found banner!
$rows[$i]['zoneid'] = 0;
return ($rows[$i]);
}
// Matched, but phpAds_aclCheck failed.
// Delete this row and adjust $prioritysum
$prioritysum -= $rows[$i]['priority'];
$rows[$i] = '';
// Break out of the for loop to try again
break;
}
else
{
// Don't check ACLs, found banner!
$rows[$i]['zoneid'] = 0;
return ($rows[$i]);
}
}
}
}
}
return false;
}
?>
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