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111 lines
2.9 KiB
111 lines
2.9 KiB
<?php
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namespace Cache;
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use Memcached as MemcachedResource;
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/**
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* Memcached缓存驱动
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*/
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class Memcached
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{
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/**
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*
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* @param array $options
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*/
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public function __construct($options = array())
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{
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if (!extension_loaded('memcached')) {
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exit('Not Support Memcached.');
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}
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$this->options = array(
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'servers' => array('127.0.0.1', 11211),
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'options' => null,
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'username' => '',
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'password' => '',
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'prefix' => '',
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'expire' => 0
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);
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$this->options = array_merge($this->options, (array) $options);
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$this->handler = new MemcachedResource;
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$this->handler->addServers($this->options['servers']);
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$this->options['options'] && $this->handler->setOptions($this->options['options']);
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$this->options['username'] && $this->handler->setSaslAuthData($this->options['username'], $this->options['password']);
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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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return $this->handler->get($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 $expire 有效时间（秒）
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* @return boolean
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*/
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public function set($name, $value, $expire = null)
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{
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if (is_null($expire)) {
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$expire = $this->options['expire'];
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}
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$name = $this->options['prefix'] . $name;
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if ($this->handler->set($name, $value, time() + $expire)) {
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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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* 更新缓存
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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 $expire 有效时间（秒）
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* @return boolean
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*/
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public function replace($name, $value, $expire = null)
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{
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if (is_null($expire)) {
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$expire = $this->options['expire'];
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}
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$name = $this->options['prefix'] . $name;
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if ($this->handler->replace($name, $value, time() + $expire)) {
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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 $name 缓存变量名
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* @return boolean
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*/
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public function rm($name, $ttl = false)
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{
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$name = $this->options['prefix'] . $name;
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return false === $ttl ?
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$this->handler->delete($name) :
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$this->handler->delete($name, $ttl);
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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 boolean
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*/
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public function clear()
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{
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return $this->handler->flush();
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}
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}
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