php如何实现静态化

ob_start ();
include "filterpost.html";
$mtime = filemtime("./filterpost.html");//在这里可以判断文件是否存在和过期，然后做缓存或者生成静态文件操作
$pageCache = str_replace('submit2','login',ob_get_contents());//将缓存去中的内容替换
ob_end_clean();
echo $mtime;
echo $pageCache;

echo &#39;<pre class="brush:php;toolbar:false">&#39;;
print_r($_SERVER);
preg_match(&#39;/^\/(\d+)\/(\d+)\.html/&#39;,$_SERVER[&#39;PATH_INFO&#39;],$arr);
print_r($arr);

RewriteEngine on 
RewriteCond %{DOCUMENT_ROOT}%{REQUEST_FILENAME} !-d 
RewriteCond %{DOCUMENT_ROOT}%{REQUEST_FILENAME} !-f 
RewriteRule ^/detail/([0-9]*).html$ /detail.php?id=$1

rewrite ^/detail/(\d+)\.html$ /detail.php?id=$1 last;