Cache.php
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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2016 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace think\sae;
use think\Exception;
/**
* SAE Memcache缓存驱动
* @author liu21st <liu21st@gmail.com>
*/
class Cache
{
protected $handler = null;
protected $options = [
'host' => '127.0.0.1',
'port' => 11211,
'expire' => 0,
'timeout' => false,
'persistent' => false,
'prefix' => '',
];
/**
* 架构函数
* @param array $options 缓存参数
* @access public
*/
public function __construct($options = [])
{
if (!function_exists('sae_debug')) {
throw new \BadFunctionCallException('must run at sae');
}
$this->handler = new \Memcached();
if (!$this->handler) {
throw new Exception('memcache init error');
}
if (!empty($options)) {
$this->options = array_merge($this->options, $options);
}
}
/**
* 读取缓存
* @access public
* @param string $name 缓存变量名
* @return mixed
*/
public function get($name)
{
return $this->handler->get($_SERVER['HTTP_APPVERSION'] . '/' . $this->options['prefix'] . $name);
}
/**
* 写入缓存
* @access public
* @param string $name 缓存变量名
* @param mixed $value 存储数据
* @param integer $expire 有效时间（秒）
* @return bool
*/
public function set($name, $value, $expire = null)
{
if (is_null($expire)) {
$expire = $this->options['expire'];
}
$name = $this->options['prefix'] . $name;
if ($this->handler->set($_SERVER['HTTP_APPVERSION'] . '/' . $name, $value, $expire)) {
return true;
}
return false;
}
/**
* 删除缓存
* @param string $name 缓存变量名
* @param bool|false $ttl
* @return bool
*/
public function rm($name, $ttl = false)
{
$name = $_SERVER['HTTP_APPVERSION'] . '/' . $this->options['prefix'] . $name;
return false === $ttl ?
$this->handler->delete($name) :
$this->handler->delete($name, $ttl);
}
/**
* 清除缓存
* @access public
* @return bool
*/
public function clear()
{
return $this->handler->flush();
}
/**
* 获得SaeKv对象
*/
private function getKv()
{
static $kv;
if (!$kv) {
$kv = new \SaeKV();
if (!$kv->init()) {
throw new Exception('KVDB init error');
}
}
return $kv;
}
}