156 lines
4.0 KiB
PHP
156 lines
4.0 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) 2006~2018 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\Driver;
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/**
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* Xcache缓存驱动
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* @author liu21st <liu21st@gmail.com>
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*/
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class Xcache extends Driver
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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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];
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/**
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* 构造函数
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* @param array $options 缓存参数
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* @access public
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* @throws \BadFunctionCallException
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*/
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public function __construct($options = [])
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{
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if (!function_exists('xcache_info')) {
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throw new \BadFunctionCallException('not support: Xcache');
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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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* 判断缓存
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* @access public
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* @param string $name 缓存变量名
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* @return bool
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*/
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public function has($name)
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{
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$key = $this->getCacheKey($name);
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return xcache_isset($key);
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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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* @param mixed $default 默认值
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* @return mixed
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*/
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public function get($name, $default = false)
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{
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$key = $this->getCacheKey($name);
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return xcache_isset($key) ? xcache_get($key) : $default;
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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|\DateTime $expire 有效时间（秒）
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* @return boolean
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*/
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public function set($name, $value, $expire = null)
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{
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if (is_null($expire)) {
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$expire = $this->options['expire'];
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}
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if ($expire instanceof \DateTime) {
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$expire = $expire->getTimestamp() - time();
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}
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if ($this->tag && !$this->has($name)) {
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$first = true;
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}
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$key = $this->getCacheKey($name);
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if (xcache_set($key, $value, $expire)) {
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isset($first) && $this->setTagItem($key);
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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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* 自增缓存（针对数值缓存）
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* @access public
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* @param string $name 缓存变量名
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* @param int $step 步长
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* @return false|int
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*/
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public function inc($name, $step = 1)
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{
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$key = $this->getCacheKey($name);
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return xcache_inc($key, $step);
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}
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/**
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* 自减缓存（针对数值缓存）
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* @access public
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* @param string $name 缓存变量名
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* @param int $step 步长
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* @return false|int
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*/
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public function dec($name, $step = 1)
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{
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$key = $this->getCacheKey($name);
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return xcache_dec($key, $step);
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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 $name 缓存变量名
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* @return boolean
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*/
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public function rm($name)
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{
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return xcache_unset($this->getCacheKey($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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* @param string $tag 标签名
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* @return boolean
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*/
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public function clear($tag = null)
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{
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if ($tag) {
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// 指定标签清除
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$keys = $this->getTagItem($tag);
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foreach ($keys as $key) {
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xcache_unset($key);
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}
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$this->rm('tag_' . md5($tag));
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return true;
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}
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if (function_exists('xcache_unset_by_prefix')) {
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return xcache_unset_by_prefix($this->options['prefix']);
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} else {
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return false;
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}
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}
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}
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