| | |
| | | */ |
| | | |
| | | class session { |
| | | |
| | | |
| | | private $session_array = array(); |
| | | private $db; |
| | | |
| | | function __construct() { |
| | | private $timeout = 0; |
| | | private $permanent = false; |
| | | |
| | | function __construct($session_timeout = 0) { |
| | | $this->db = new db; |
| | | $this->timeout = $session_timeout; |
| | | } |
| | | |
| | | function set_timeout($session_timeout = 0) { |
| | | $old_timeout = $this->timeout; |
| | | $this->timeout = $session_timeout; |
| | | return $old_timeout; |
| | | } |
| | | |
| | | function set_permanent($value = false) { |
| | | $this->permanent = $value; |
| | | } |
| | | |
| | | function open ($save_path, $session_name) { |
| | | return true; |
| | | } |
| | | |
| | | |
| | | function close () { |
| | | |
| | | if (!empty($this->session_array)) { |
| | | $result = $this->gc(ini_get('session.gc_maxlifetime')); |
| | | return $result; |
| | | } |
| | | return false; |
| | | } |
| | | |
| | | $result = $this->gc(ini_get('session.gc_maxlifetime')); |
| | | return $result; |
| | | } |
| | | return false; |
| | | } |
| | | |
| | | function read ($session_id) { |
| | | |
| | | $rec = $this->db->queryOneRecord("SELECT * FROM sys_session WHERE session_id = '".$this->db->quote($session_id)."'"); |
| | | if($this->timeout > 0) { |
| | | $rec = $this->db->queryOneRecord("SELECT * FROM sys_session WHERE session_id = ? AND (`permanent` = 'y' OR last_updated >= DATE_SUB(NOW(), INTERVAL ? MINUTE))", $session_id, $this->timeout); |
| | | } else { |
| | | $rec = $this->db->queryOneRecord("SELECT * FROM sys_session WHERE session_id = ?", $session_id); |
| | | } |
| | | |
| | | if (is_array($rec)) { |
| | | if (is_array($rec)) { |
| | | $this->session_array = $rec; |
| | | return $this->session_array['session_data']; |
| | | } else { |
| | | return ''; |
| | | } |
| | | } |
| | | |
| | | |
| | | function write ($session_id, $session_data) { |
| | | |
| | | |
| | | if (!empty($this->session_array) && $this->session_array['session_id'] != $session_id) { |
| | | $this->session_array = array(); |
| | | } |
| | | |
| | | $this->session_array = array(); |
| | | } |
| | | |
| | | // Dont write session_data to DB if session data has not been changed after reading it. |
| | | if(isset($this->session_array['session_data']) && $this->session_array['session_data'] != '' && $this->session_array['session_data'] == $session_data) { |
| | | $session_id = $this->db->quote($session_id); |
| | | $last_updated = date('Y-m-d H:i:s'); |
| | | $this->db->query("UPDATE sys_session SET last_updated = '$last_updated' WHERE session_id = '$session_id'"); |
| | | $this->db->query("UPDATE sys_session SET last_updated = NOW() WHERE session_id = ?", $session_id); |
| | | return true; |
| | | } |
| | | |
| | | |
| | | if ($this->session_array['session_id'] == '') { |
| | | $session_id = $this->db->quote($session_id); |
| | | $date_created = date('Y-m-d H:i:s'); |
| | | $last_updated = date('Y-m-d H:i:s'); |
| | | $session_data = $this->db->quote($session_data); |
| | | $sql = "INSERT INTO sys_session (session_id,date_created,last_updated,session_data) VALUES ('$session_id','$date_created','$last_updated','$session_data')"; |
| | | $this->db->query($sql); |
| | | |
| | | } else { |
| | | $session_id = $this->db->quote($session_id); |
| | | $last_updated = date('Y-m-d H:i:s'); |
| | | $session_data = $this->db->quote($session_data); |
| | | $sql = "UPDATE sys_session SET last_updated = '$last_updated', session_data = '$session_data' WHERE session_id = '$session_id'"; |
| | | $this->db->query($sql); |
| | | if (@$this->session_array['session_id'] == '') { |
| | | $sql = "REPLACE INTO sys_session (session_id,date_created,last_updated,session_data,permanent) VALUES (?,NOW(),NOW(),'$session_data',?)"; |
| | | $this->db->query($sql, $session_id, ($this->permanent ? 'y' : 'n')); |
| | | |
| | | } |
| | | |
| | | return true; |
| | | } |
| | | |
| | | } else { |
| | | $sql = "UPDATE sys_session SET last_updated = NOW(), session_data = ?" . ($this->permanent ? ", `permanent` = 'y'" : "") . " WHERE session_id = ?"; |
| | | $this->db->query($sql, $session_data, $session_id); |
| | | |
| | | } |
| | | |
| | | return true; |
| | | } |
| | | |
| | | function destroy ($session_id) { |
| | | |
| | | $session_id = $this->db->quote($session_id); |
| | | $sql = "DELETE FROM sys_session WHERE session_id = '$session_id'"; |
| | | $this->db->query($sql); |
| | | |
| | | return true; |
| | | } |
| | | |
| | | $sql = "DELETE FROM sys_session WHERE session_id = ?"; |
| | | $this->db->query($sql, $session_id); |
| | | |
| | | return true; |
| | | } |
| | | |
| | | function gc ($max_lifetime) { |
| | | |
| | | $real_now = date('Y-m-d H:i:s'); |
| | | $dt1 = strtotime("$real_now -$max_lifetime seconds"); |
| | | $dt2 = date('Y-m-d H:i:s', $dt1); |
| | | |
| | | $sql = "DELETE FROM sys_session WHERE last_updated < '$dt2'"; |
| | | $sql = "DELETE FROM sys_session WHERE last_updated < DATE_SUB(NOW(), INTERVAL ? SECOND) AND `permanent` != 'y'"; |
| | | $this->db->query($sql, intval($max_lifetime)); |
| | | |
| | | /* delete very old even if they are permanent */ |
| | | $sql = "DELETE FROM sys_session WHERE last_updated < DATE_SUB(NOW(), INTERVAL 1 YEAR)"; |
| | | $this->db->query($sql); |
| | | |
| | | return true; |
| | | |
| | | } |
| | | |
| | | return true; |
| | | |
| | | } |
| | | |
| | | function __destruct () { |
| | | @session_write_close(); |
| | | @session_write_close(); |
| | | |
| | | } |
| | | } |
| | | |
| | | } |
| | | |
| | | ?> |
| | | ?> |