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<?php
/**
* Elgg statistics library.
* This file contains a number of functions for obtaining statistics about the running system.
* These statistics are mainly used by the administration pages.
*
* @package Elgg
* @subpackage Core
* @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2
* @author Marcus Povey
* @copyright Curverider Ltd 2008
* @link http://elgg.org/
*/
// number of users
// Number of objects broken down into type
// who' s online now
/**
* Return an array reporting the number of various entities in the system.
*
* @return array
*/
function get_entity_statistics()
{
global $CONFIG;
$entity_stats = array();
// Get a list of major types
$types = get_data("SELECT distinct e.type,s.subtype,e.subtype as subtype_id from {$CONFIG->dbprefix}entities e left join {$CONFIG->dbprefix}entity_subtypes s on e.subtype=s.id");
foreach ($types as $type) {
if (!is_array($entity_stats[$type->type]))
$entity_stats[$type->type] = array(); // assume there are subtypes for now
$query = "SELECT count(*) as count from {$CONFIG->dbprefix}entities where type='{$type->type}'";
if ($type->subtype) $query.= " and subtype={$type->subtype_id}";
$subtype_cnt = get_data_row($query);
if ($type->subtype)
$entity_stats[$type->type][$type->subtype] = $subtype_cnt->count;
else
$entity_stats[$type->type]['__base__'] = $subtype_cnt->count;
}
return $entity_stats;
}
/**
* Return the number of users registered in the system.
*
* @return int
*/
function get_number_users()
{
global $CONFIG;
$result = get_data_row("SELECT count(*) as count from {$CONFIG->dbprefix}entities where type='user'");
if ($result)
return $result->count;
return false;
}
/**
* Report how many users are currently online
*
* @return int
*/
function get_number_online()
{
// TODO: get logged in users somehow
}
/**
* Return a list of how many users are currently online.
*
* @param int $limit Number of users to return
*/
function get_online_users($limit = 10)
{
// TODO: Writeme
}
?>
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