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<?php
/**
*
* @package phpBB3
* @copyright (c) 2012 phpBB Group
* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
*
*/
/**
*/
if (!defined('IN_PHPBB'))
{
exit;
}
/**
* User loader class
*
* This handles loading users from the database and
* storing in them in a temporary cache so we do not
* have to query the same user multiple times in
* different services.
*/
class phpbb_user_loader
{
/** @var dbal */
protected $db = null;
/** @var string */
protected $phpbb_root_path = null;
/** @var string */
protected $php_ext = null;
/** @var string */
protected $users_table = null;
/**
* Users loaded from the DB
*
* @var array Array of user data that we've loaded from the DB
*/
protected $users = array();
public function __construct(dbal $db, $phpbb_root_path, $php_ext, $users_table)
{
$this->db = $db;
$this->phpbb_root_path = $phpbb_root_path;
$this->php_ext = $php_ext;
$this->users_table = $users_table;
}
/**
* Load user helper
*
* @param array $user_ids
*/
public function load_users(array $user_ids)
{
$user_ids[] = ANONYMOUS;
// Load the users
$user_ids = array_unique($user_ids);
// Do not load users we already have in $this->users
$user_ids = array_diff($user_ids, array_keys($this->users));
if (sizeof($user_ids))
{
$sql = 'SELECT *
FROM ' . $this->users_table . '
WHERE ' . $this->db->sql_in_set('user_id', $user_ids);
$result = $this->db->sql_query($sql);
while ($row = $this->db->sql_fetchrow($result))
{
$this->users[$row['user_id']] = $row;
}
$this->db->sql_freeresult($result);
}
}
/**
* Get a user row from our users cache
*
* @param int $user_id
* @return array|bool Row from the database of the user or Anonymous if the user wasn't loaded/does not exist
* or bool False if the anonymous user was not loaded
*/
public function get_user($user_id)
{
return (isset($this->users[$user_id])) ? $this->users[$user_id] : (isset($this->users[ANONYMOUS]) ? $this->users[ANONYMOUS] : false);
}
/**
* Get avatar
*
* @param int $user_id
* @return string
*/
public function get_avatar($user_id)
{
if (!($user = $this->get_user($user_id)))
{
return '';
}
if (!function_exists('get_user_avatar'))
{
include($this->phpbb_root_path . 'includes/functions_display.' . $this->php_ext);
}
return get_user_avatar($user['user_avatar'], $user['user_avatar_type'], $user['user_avatar_width'], $user['user_avatar_height']);
}
}
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