<?php<liu21st@gmail.com>
namespace think\session\driver;
use SessionHandler;
use think\Exception;
class Memcached extends SessionHandler
{
protected $handler = null;
protected $config = [
'host' => '127.0.0.1', 'port' => 11211, 'expire' => 3600, 'timeout' => 0, 'session_name' => '', 'username' => '', 'password' => '', ];
public function __construct($config = [])
{
$this->config = array_merge($this->config, $config);
}
public function open($savePath, $sessName)
{
if (!extension_loaded('memcached')) {
throw new Exception('not support:memcached');
}
$this->handler = new \Memcached;
if ($this->config['timeout'] > 0) {
$this->handler->setOption(\Memcached::OPT_CONNECT_TIMEOUT, $this->config['timeout']);
}
$hosts = explode(',', $this->config['host']);
$ports = explode(',', $this->config['port']);
if (empty($ports[0])) {
$ports[0] = 11211;
}
$servers = [];
foreach ((array) $hosts as $i => $host) {
$servers[] = [$host, (isset($ports[$i]) ? $ports[$i] : $ports[0]), 1];
}
$this->handler->addServers($servers);
if ('' != $this->config['username']) {
$this->handler->setOption(\Memcached::OPT_BINARY_PROTOCOL, true);
$this->handler->setSaslAuthData($this->config['username'], $this->config['password']);
}
return true;
}
public function close()
{
$this->gc(ini_get('session.gc_maxlifetime'));
$this->handler->quit();
$this->handler = null;
return true;
}
public function read($sessID)
{
return (string) $this->handler->get($this->config['session_name'] . $sessID);
}
public function write($sessID, $sessData)
{
return $this->handler->set($this->config['session_name'] . $sessID, $sessData, $this->config['expire']);
}
public function destroy($sessID)
{
return $this->handler->delete($this->config['session_name'] . $sessID);
}
public function gc($sessMaxLifeTime)
{
return true;
}
}