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112 lines
2.9 KiB
PHP
112 lines
2.9 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) 2006~2015 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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/**
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* Eaccelerator缓存驱动
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* @author liu21st <liu21st@gmail.com>
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*/
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class Eaccelerator
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{
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protected $options = [
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'prefix' => '',
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'expire' => 0,
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'length' => 0,
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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 (!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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\think\Cache::$readTimes++;
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return eaccelerator_get($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 $expire 有效时间（秒）
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* @return boolen
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*/
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public function set($name, $value, $expire = null)
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{
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\think\Cache::$writeTimes++;
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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'] . $name;
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eaccelerator_lock($name);
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if (eaccelerator_put($name, $value, $expire)) {
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if ($this->options['length'] > 0) {
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// 记录缓存队列
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$queue = eaccelerator_get('__info__');
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if (!$queue) {
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$queue = [];
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}
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if (false === array_search($name, $queue)) {
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array_push($queue, $name);
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}
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if (count($queue) > $this->options['length']) {
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// 出列
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$key = array_shift($queue);
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// 删除缓存
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eaccelerator_rm($key);
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}
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eaccelerator_put('__info__', $queue);
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}
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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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* @access public
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* @param string $name 缓存变量名
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* @return boolen
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*/
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public function rm($name)
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{
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return eaccelerator_rm($this->options['prefix'] . $name);
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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 boolen
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*/
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public function clear()
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{
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return;
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}
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}
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