PHP缓存页面方法
PHP缓存页面函数。
<p>/*****************************************************************</p>-- 函数名:cache_page(包括cache_page_go)<br />-- 作 用:轻松快速缓存全站<br />-- 参 数:缓存时间(单位:秒)<br />-- 返回值:输出内容<br />-- 实 例:cache_page(300); 函数使用在页面的最上方<br />*******************************************************************/<br /><br />function cache_page($refresh=20){<br /> ob_start();//开启缓冲区<br /> $temp=sha1($_SERVER['PHP_SELF'].'|G|'.serialize($_GET).'|P|'.serialize($_POST));//缓存文件名字<br /> $temp=dirname(__FILE__).'/cache/'.$temp;//缓存文件路径<br /> if(!file_exists($temp)){//缓存文件不存在<br /> register_shutdown_function('cache_page_go',$temp);<br /> }else{//缓存文件存在<br /> if((time()-filemtime($temp))>$refresh ){//缓存超时<br /> register_shutdown_function('cache_page_go',$temp);//调用函数<br /> }else{//正常使用缓存文件<br /> $temp=file_get_contents($temp);//取出缓存文件内容<br /> echo $temp;//输出缓存内容<br /> $temp=ob_get_contents();//取出缓冲区内容<br /> ob_get_clean(); //清空缓冲区<br /> echo $temp; //输出<br /> unset($temp,$refresh);/*注销变量*/<br /> exit();<br /> }<br /> }<br /><p>}</p><p><br /></p>function cache_page_go($file){<br /> $output=ob_get_contents();//获取缓冲区内容<br /> ob_get_clean(); //清空缓冲区<br /> file_put_contents($file,$output,LOCK_EX);//写入缓存文件<br /> echo $output;//输出缓存内容<br /> unset($output,$file);/*注销变量*/<br /> exit();<br /><p>}</p>
建议将该函数放置在页面的最开始处

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