// +---------------------------------------------------------------------- namespace think\session\driver; use SessionHandler; use think\Exception; class Memcached extends SessionHandler { protected $handler = null; protected $config = [ 'host' => '127.0.0.1', // memcache主机 'port' => 11211, // memcache端口 'expire' => 3600, // session有效期 'timeout' => 0, // 连接超时时间(单位:毫秒) 'session_name' => '', // memcache key前缀 'username' => '', //账号 'password' => '', //密码 ]; public function __construct($config = []) { $this->config = array_merge($this->config, $config); } /** * 打开Session * @access public * @param string $savePath * @param mixed $sessName */ public function open($savePath, $sessName) { // 检测php环境 if (!extension_loaded('memcached')) { throw new Exception('not support:memcached'); } $this->handler = new \Memcached; // 设置连接超时时间(单位:毫秒) if ($this->config['timeout'] > 0) { $this->handler->setOption(\Memcached::OPT_CONNECT_TIMEOUT, $this->config['timeout']); } // 支持集群 $hosts = explode(',', $this->config['host']); $ports = explode(',', $this->config['port']); if (empty($ports[0])) { $ports[0] = 11211; } // 建立连接 $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; } /** * 关闭Session * @access public */ public function close() { $this->gc(ini_get('session.gc_maxlifetime')); $this->handler->quit(); $this->handler = null; return true; } /** * 读取Session * @access public * @param string $sessID */ public function read($sessID) { return (string) $this->handler->get($this->config['session_name'] . $sessID); } /** * 写入Session * @access public * @param string $sessID * @param String $sessData * @return bool */ public function write($sessID, $sessData) { return $this->handler->set($this->config['session_name'] . $sessID, $sessData, $this->config['expire']); } /** * 删除Session * @access public * @param string $sessID * @return bool */ public function destroy($sessID) { return $this->handler->delete($this->config['session_name'] . $sessID); } /** * Session 垃圾回收 * @access public * @param string $sessMaxLifeTime * @return true */ public function gc($sessMaxLifeTime) { return true; } }