<?php
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/**
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* PhalApi_Cache_Memecahce MC缓存
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*
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* - 使用序列化对需要存储的值进行转换，以提高速度
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* - 默认不使用zlib对值压缩
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* - 请尽量使用Memcached扩展
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*
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* @package PhalApi\Cache
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* @license http://www.phalapi.net/license GPL 协议
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* @link http://www.phalapi.net/
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* @author PhpStorm George <plzhuangyuan@163.com> 15/5/6 下午8:53
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*/
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class PhalApi_Cache_Memcache implements PhalApi_Cache {
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protected $memcache = null;
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protected $prefix;
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/**
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* @param string $config['host'] Memcache域名，多个用英文逗号分割
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* @param int/string $config['port'] Memcache端口，多个用英文逗号分割
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* @param int/string $config['weight'] Memcache权重，多个用英文逗号分割
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* @param string $config['prefix'] Memcache key prefix
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*/
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public function __construct($config) {
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$this->memcache = $this->createMemcache();
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$hostArr = explode(',', $config['host']);
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$portArr = explode(',', $config['port']);
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$weightArr = isset($config['weight']) ? explode(',', $config['weight']) : array();
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foreach ($hostArr as $idx => $host) {
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$this->memcache->addServer(
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trim($host),
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isset($portArr[$idx]) ? intval($portArr[$idx]) : 11211,
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isset($weightArr[$idx]) ? intval($weightArr[$idx]) : 0
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);
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}
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$this->prefix = isset($config['prefix']) ? $config['prefix'] : 'phalapi_';
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}
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public function set($key, $value, $expire = 600) {
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$this->memcache->set($this->formatKey($key), @serialize($value), 0, $expire);
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}
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public function get($key) {
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$value = $this->memcache->get($this->formatKey($key));
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return $value !== FALSE ? @unserialize($value) : NULL;
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}
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public function delete($key) {
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return $this->memcache->delete($this->formatKey($key));
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}
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/**
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* 获取MC实例，以便提供桩入口
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* @return Memcache
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*/
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protected function createMemcache() {
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return new Memcache();
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}
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protected function formatKey($key) {
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return $this->prefix . $key;
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}
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}
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