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<?php
/*
CREATE TABLE IF NOT EXISTS `session` (
`session_id` varchar(32) NOT NULL,
`data` text NOT NULL,
`expire` datetime NOT NULL,
PRIMARY KEY (`session_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;
*/
namespace Session;
final class DB {
public $expire = '';
public function __construct($registry) {
$this->db = $registry->get('db');
$this->expire = ini_get('session.gc_maxlifetime');
}
public function read($session_id) {
$query = $this->db->query("SELECT `data` FROM `" . DB_PREFIX . "session` WHERE session_id = '" . $this->db->escape($session_id) . "' AND expire > " . (int)time());
if ($query->num_rows) {
return json_decode($query->row['data'], true);
} else {
return false;
}
}
public function write($session_id, $data) {
if ($session_id) {
$this->db->query("REPLACE INTO `" . DB_PREFIX . "session` SET session_id = '" . $this->db->escape($session_id) . "', `data` = '" . $this->db->escape(json_encode($data)) . "', expire = '" . $this->db->escape(date('Y-m-d H:i:s', time() + $this->expire)) . "'");
}
return true;
}
public function destroy($session_id) {
$this->db->query("DELETE FROM `" . DB_PREFIX . "session` WHERE session_id = '" . $this->db->escape($session_id) . "'");
return true;
}
public function gc($expire) {
$this->db->query("DELETE FROM `" . DB_PREFIX . "session` WHERE expire < " . ((int)time() + $expire));
return true;
}
}
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