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<?php |
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// +---------------------------------------------------------------------- |
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// | ThinkPHP [ WE CAN DO IT JUST THINK ] |
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// +---------------------------------------------------------------------- |
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// | Copyright (c) 2006~2019 http://thinkphp.cn All rights reserved. |
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// +---------------------------------------------------------------------- |
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 ) |
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// +---------------------------------------------------------------------- |
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// | Author: liu21st <[email protected]> |
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// +---------------------------------------------------------------------- |
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declare (strict_types = 1); |
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namespace think\session\driver; |
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use think\Exception; |
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use think\session\SessionHandler; |
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class Memcached implements SessionHandler |
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{ |
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protected $handler = null; |
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protected $config = [ |
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'host' => '127.0.0.1', // memcache主机 |
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'port' => 11211, // memcache端口 |
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'expire' => 3600, // session有效期 |
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'timeout' => 0, // 连接超时时间（单位：毫秒） |
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'prefix' => '', // session name （memcache key前缀） |
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'username' => '', //账号 |
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'password' => '', //密码 |
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]; |
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public function __construct(array $config = []) |
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{ |
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$this->config = array_merge($this->config, $config); |
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$this->init(); |
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} |
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/** |
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* Session初始化 |
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* @access protected |
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* @return bool |
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*/ |
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protected function init(): bool |
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{ |
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// 检测php环境 |
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if (!extension_loaded('memcached')) { |
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throw new Exception('not support:memcached'); |
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} |
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$this->handler = new \Memcached; |
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// 设置连接超时时间（单位：毫秒） |
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if ($this->config['timeout'] > 0) { |
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$this->handler->setOption(\Memcached::OPT_CONNECT_TIMEOUT, $this->config['timeout']); |
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} |
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// 支持集群 |
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$hosts = (array) $this->config['host']; |
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$ports = (array) $this->config['port']; |
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if (empty($ports[0])) { |
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$ports[0] = 11211; |
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} |
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// 建立连接 |
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$servers = []; |
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foreach ($hosts as $i => $host) { |
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$servers[] = [$host, $ports[$i] ?? $ports[0], 1]; |
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} |
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$this->handler->addServers($servers); |
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if ('' != $this->config['username']) { |
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$this->handler->setOption(\Memcached::OPT_BINARY_PROTOCOL, true); |
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$this->handler->setSaslAuthData($this->config['username'], $this->config['password']); |
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} |
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return true; |
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} |
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/** |
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* 读取Session |
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* @access public |
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* @param string $sessID |
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* @return string |
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*/ |
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public function read(string $sessID): string |
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{ |
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return (string) $this->handler->get($this->config['prefix'] . $sessID); |
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} |
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/** |
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* 写入Session |
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* @access public |
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* @param string $sessID |
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* @param array $data |
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* @return bool |
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*/ |
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public function write(string $sessID, string $data): bool |
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{ |
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return $this->handler->set($this->config['prefix'] . $sessID, $data, $this->config['expire']); |
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} |
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/** |
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* 删除Session |
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* @access public |
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* @param string $sessID |
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* @return bool |
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*/ |
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public function delete(string $sessID): bool |
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{ |
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return $this->handler->delete($this->config['prefix'] . $sessID); |
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} |
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} |
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