다음 클래스는 추가, 읽기, 지우기, 삭제, 서버 정보 가져오기, 서비스 풀 캐싱 등을 포함하여 Memcache를 캡슐화합니다.
<code><span><span><span><?php</span>/******************************************* * 文件名: /includes/memcache.class.php * 功能: memcache 缓存类 * 版本: 1.0 * 日期: 2016-07-16 * 程序名: memcache缓存操作类 -----(PHP中需加载memcache扩展) * 作者: JoeXiong * 版权: Copyright@2016-2016 github.com/JoeXiong All Rights Reserved *********************************************/</span><span><span>class</span><span>joememcache</span> {</span><span>private</span><span>static</span><span>$_instance</span>; <span>private</span><span>$_memcache</span>; <span>private</span><span>$_which</span> = <span>0</span>; <span>private</span><span>$_memservers</span>; <span>public</span><span>static</span><span><span>function</span><span>getInstance</span><span>()</span> {</span><span>if</span> (! (<span>self</span>::<span>$_instance</span><span>instanceof</span> joememcache)) { <span>self</span>::<span>$_instance</span> = <span>new</span><span>self</span>(); } <span>return</span> is_object(<span>self</span>::<span>$_instance</span>->_memcache) ? <span>self</span>::<span>$_instance</span> : <span>false</span>; } <span>private</span><span><span>function</span><span>__construct</span><span>()</span> {</span><span>if</span> (extension_loaded(<span>'memcache'</span>)) { <span>$this</span>->_memcache = <span>new</span> Memcache(); <span>$this</span>->_which = <span>1</span>; } <span>elseif</span> (extension_loaded(<span>'memcached'</span>)) { <span>$this</span>->_memcache = <span>new</span> Memcached(); <span>$this</span>->_which = <span>2</span>; } <span>else</span><span>$this</span>->_memcache = <span>FALSE</span>; } <span>/** * 保存缓存 *<span> @param</span> unknown $key *<span> @param</span> unknown $data *<span> @param</span> number $ttl *<span> @param</span> string $isCompress *<span> @return</span> boolean */</span><span>public</span><span><span>function</span><span>Save</span><span>(<span>$key</span>, <span>$data</span>, <span>$ttl</span> = <span>60</span>,<span>$isCompress</span> = FALSE)</span>{</span><span>if</span>(<span>$this</span>->_which == <span>1</span>) <span>return</span><span>$this</span>->_memcache->set(<span>$key</span>, <span>array</span>(<span>$data</span>, time(), <span>$ttl</span>), !<span>$isCompress</span> ? <span>0</span> : MEMCACHE_COMPRESSED, <span>$ttl</span>);<span>//使用time() 函数最新</span><span>else</span><span>if</span>(<span>$this</span>->_which == <span>2</span>) <span>return</span><span>$this</span>->_memcache->set(<span>$key</span>, <span>array</span>(<span>$data</span>, time(), <span>$ttl</span>), <span>$ttl</span>); <span>else</span><span>return</span><span>FALSE</span>; } <span>/** * 读取缓存信息 *<span> @param</span> unknown $key *<span> @return</span> Ambigous <multitype:, string>|boolean */</span><span>public</span><span><span>function</span><span>readMetaData</span><span>(<span>$key</span>)</span>{</span><span>$value</span> = <span>$this</span>->_memcache->get(<span>$key</span>); <span>if</span>(is_array(<span>$value</span>) && count(<span>$value</span>) == <span>3</span>){ <span>list</span>(<span>$data</span>, <span>$time</span>, <span>$ttl</span>) = <span>$value</span>; <span>return</span> (time() < <span>$time</span> + <span>$ttl</span>) ? <span>$data</span> : <span>array</span>(); } <span>else</span> { <span>return</span><span>false</span>; } } <span>/** *<span> @deprecated</span> 读取多个缓存信息 *<span> @param</span> array $array *<span> @return</span> 成功$value(array), 失败FALSE(bool) */</span><span>public</span><span><span>function</span><span>readMultiData</span><span>(<span>$keys</span>)</span> {</span><span>if</span>(!is_array(<span>$keys</span>)) { <span>return</span><span>FALSE</span>; } <span>$rtn</span> = <span>array</span>(); <span>if</span>(<span>$this</span>->_which == <span>1</span>) <span>$rtn</span> = <span>$this</span>->_memcache->get(<span>$keys</span>); <span>else</span><span>if</span>(<span>$this</span>->_which == <span>2</span>) <span>$rtn</span> = <span>$this</span>->_memcache->getMulti(<span>$keys</span>); <span>$now</span> = time(); <span>foreach</span>(<span>$rtn</span><span>as</span><span>$key</span>=>&<span>$v</span>) { <span>if</span>(!<span>empty</span>(<span>$v</span>)) { <span>list</span>(<span>$data</span>, <span>$time</span>, <span>$ttl</span>) = <span>$v</span>; <span>$v</span> = (<span>$now</span> < <span>$time</span> + <span>$ttl</span>) ? <span>$data</span> : <span>array</span>(); } } <span>return</span><span>$rtn</span>; } <span>/** *<span> @description</span> 读取缓存 *<span> @param</span> $key 查询索引key *<span> @return</span> 成功 array 失败 FALSE */</span><span>public</span><span><span>function</span><span>Read</span><span>(<span>$key</span>)</span> {</span><span>$data</span> = <span>$this</span>->_memcache->get(<span>$key</span>); <span>return</span> is_array(<span>$data</span>) ? <span>$data</span>[<span>0</span>] : <span>FALSE</span>; } <span>/** *<span> @description</span> 删除缓存 *<span> @param</span> $key 将要删除的key * return bool 成功 TRUE 失败 FALSE */</span><span>public</span><span><span>function</span><span>Delete</span><span>(<span>$key</span>)</span> {</span><span>return</span><span>$this</span>->_memcache->delete(<span>$key</span>); } <span>/** *<span> @description</span> 清空所有缓存 *<span> @return</span> bool true or false */</span><span>public</span><span><span>function</span><span>Clear</span><span>()</span> {</span><span>return</span><span>$this</span>->_memcache->flush(); } <span>/** * 获取缓存服务器池中所有服务器统计信息 *<span> @return</span> array */</span><span>public</span><span><span>function</span><span>getExtendedStats</span><span>()</span> {</span><span>//return $this->_memcache->getExtendedStats();</span><span>if</span>(<span>$this</span>->_which == <span>1</span>) { <span>return</span><span>$this</span>->_memcache->getExtendedStats(); } <span>else</span><span>if</span>(<span>$this</span>->_which == <span>2</span>) <span>return</span><span>$this</span>->_memcache->getServerList(); <span>else</span><span>return</span><span>FALSE</span>; } <span>/** * 缓存服务器池 */</span><span>public</span><span><span>function</span><span>addServer</span><span>()</span> {</span><span>foreach</span> (<span>$this</span>->_memservers <span>as</span><span>$h</span>) { <span>$this</span>->_memcache->addServer(<span>$h</span>[<span>'host'</span>], <span>isset</span>(<span>$h</span>[<span>'port'</span>]) ? <span>$h</span>[<span>'port'</span>] : <span>11211</span>); <span>// 默认端口为11211</span> } } <span>/** * 获取memecache服务器地址 */</span><span>public</span><span><span>function</span><span>getHost</span><span>()</span> {</span><span>return</span><span>$this</span>->_memservers; } <span>/** * 设置memcache服务器地址 */</span><span>public</span><span><span>function</span><span>setHost</span><span>(array <span>$servers</span>)</span> {</span><span>if</span> (is_array(<span>$servers</span>) && ! <span>empty</span>(<span>$servers</span>)) { <span>$this</span>->_memservers = <span>$servers</span>; <span>$this</span>->addServer(); } } <span>private</span><span><span>function</span><span>__clone</span><span>()</span> {</span>} }</span></span></span></code>
캡슐화된 클래스를 사용하는 방법은 다음과 같습니다
<code><span>//初始化memcache</span><span>$memcache</span> = joememcache::getInstance(); <span>//是否开启memcache扩展</span><span>if</span>(<span>$memcache</span>){ <span>//memcache的配置参数,放在配置文件中</span><span>global</span><span>$memServer</span>,<span>$memKey</span>; <span>//设置memecache服务器地址</span><span>$memcache</span>->setHost(<span>$memServer</span>); <span>//通过key读取数据</span><span>$news</span> = <span>$memcache</span>->readMetaData(<span>$memKey</span>[<span>'sharetypekey'</span>][<span>'10001'</span>][<span>'Key'</span>].<span>$id</span>); <span>//memcache没有当前key的数据,则从数据库查询并保存到memecache服务器中</span><span>if</span>(!<span>$news</span>){ <span>$news</span> = <span>$this</span>->getCurSharenewsInfo(<span>$id</span>); <span>$memcache</span>->Save(<span>$memKey</span>[<span>'sharetypekey'</span>][<span>'10001'</span>][<span>'Key'</span>].<span>$id</span>,<span>$news</span>,<span>$memKey</span>[<span>'sharetypekey'</span>][<span>'10001'</span>][<span>'Time'</span>]); } }<span>else</span>{ <span>//直接数据库查询数据</span><span>$news</span> = <span>$this</span>->getCurSharenewsInfo(<span>$id</span>); }</code>
이상으로 PHP-Mmecache 연산 클래스에 대한 자세한 소개와 관련 내용을 소개하였습니다. PHP 튜토리얼에 관심이 있는 친구들에게 도움이 되었으면 좋겠습니다.