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123 lines
3.3 KiB
PHP
123 lines
3.3 KiB
PHP
<?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) 2006~2016 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 <liu21st@gmail.com>
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// +----------------------------------------------------------------------
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namespace think\cache\driver;
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use think\Cache;
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use think\Exception;
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/**
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* SAE Memcache缓存驱动
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* @author liu21st <liu21st@gmail.com>
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*/
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class Sae
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{
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protected $handler = null;
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protected $options = [
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'host' => '127.0.0.1',
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'port' => 11211,
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'expire' => 0,
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'timeout' => false,
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'persistent' => false,
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'prefix' => '',
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];
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/**
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* 架构函数
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* @param array $options 缓存参数
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* @access public
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*/
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public function __construct($options = [])
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{
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if (!function_exists('memcache_init')) {
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throw new Exception('请在SAE平台上运行代码。');
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}
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$this->handler = memcache_init();
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if (!$this->handler) {
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throw new Exception('您未开通Memcache服务，请在SAE管理平台初始化Memcache服务');
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}
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if (!empty($options)) {
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$this->options = array_merge($this->options, $options);
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}
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}
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/**
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* 读取缓存
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* @access public
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* @param string $name 缓存变量名
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* @return mixed
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*/
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public function get($name)
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{
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return $this->handler->get($_SERVER['HTTP_APPVERSION'] . '/' . $this->options['prefix'] . $name);
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}
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/**
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* 写入缓存
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* @access public
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* @param string $name 缓存变量名
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* @param mixed $value 存储数据
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* @param integer $expire 有效时间（秒）
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* @return bool
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*/
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public function set($name, $value, $expire = null)
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{
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if (is_null($expire)) {
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$expire = $this->options['expire'];
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}
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$name = $this->options['prefix'] . $name;
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if ($this->handler->set($_SERVER['HTTP_APPVERSION'] . '/' . $name, $value, 0, $expire)) {
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return true;
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}
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return false;
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}
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/**
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* 删除缓存
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* @param string $name 缓存变量名
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* @param bool|false $ttl
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* @return bool
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*/
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public function rm($name, $ttl = false)
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{
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$name = $_SERVER['HTTP_APPVERSION'] . '/' . $this->options['prefix'] . $name;
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return false === $ttl ?
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$this->handler->delete($name) :
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$this->handler->delete($name, $ttl);
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}
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/**
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* 清除缓存
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* @access public
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* @return bool
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*/
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public function clear()
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{
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return $this->handler->flush();
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}
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/**
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* 获得SaeKv对象
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*/
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private function getKv()
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{
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static $kv;
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if (!$kv) {
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$kv = new \SaeKV();
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if (!$kv->init()) {
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throw new Exception('您没有初始化KVDB，请在SAE管理平台初始化KVDB服务');
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}
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}
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return $kv;
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}
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}
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