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64 lines
2.5 KiB
64 lines
2.5 KiB
<?php
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// +----------------------------------------------------------------------
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// | PHPSpider [ A PHP Framework For Crawler ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006-2014 https://doc.phpspider.org 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: Seatle Yang <seatle@foxmail.com>
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// +----------------------------------------------------------------------
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//----------------------------------
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// PHPSpider缓存类文件
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//----------------------------------
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class cache
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{
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// 多进程下面不能用单例模式
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//protected static $_instance;
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/**
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* 获取实例
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*
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* @return void
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* @author seatle <seatle@foxmail.com>
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* @created time :2016-04-10 22:55
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*/
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public static function init()
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{
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if(extension_loaded('Redis'))
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{
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$_instance = new Redis();
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}
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else
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{
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$errmsg = "extension redis is not installed";
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log::add($errmsg, "Error");
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return null;
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}
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// 这里不能用pconnect，会报错：Uncaught exception 'RedisException' with message 'read error on connection'
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$_instance->connect($GLOBALS['config']['redis']['host'], $GLOBALS['config']['redis']['port'], $GLOBALS['config']['redis']['timeout']);
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// 验证
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if ($GLOBALS['config']['redis']['pass'])
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{
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if ( !$_instance->auth($GLOBALS['config']['redis']['pass']) )
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{
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$errmsg = "Redis Server authentication failed!!";
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log::add($errmsg, "Error");
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return null;
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}
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}
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// 不序列化的话不能存数组，用php的序列化方式其他语言又不能读取，所以这里自己用json序列化了，性能还比php的序列化好1.4倍
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//$_instance->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_NONE); // don't serialize data
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//$_instance->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_PHP); // use built-in serialize/unserialize
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//$_instance->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_IGBINARY); // use igBinary serialize/unserialize
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$_instance->setOption(Redis::OPT_PREFIX, $GLOBALS['config']['redis']['prefix'] . ":");
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return $_instance;
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}
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}
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