php 生成静态html

require "comm.php"; 
if(isset($_POST['submit'])){ 
    $title=$_POST['title']; 
    $content=$_POST['content']; 
    $addtime=time(); 
    $sql="insert into news (title,content,addtime) values ('$title','$content','$addtime')"; 
    $rs=$db->query($sql); 
    if($rs){ 
        $time=date('ymd'); 
        $tmp=$_SERVER['DOCUMENT_ROOT'].dirname($_SERVER['PHP_SELF']).'/'.$time.$title.'.'.html; 
        $fp=fopen($tmp,'w'); 
        $tmpT=$_SERVER['DOCUMENT_ROOT'].dirname($_SERVER['PHP_SELF']).'/tmp.html'; 
        $fpT=fopen($tmpT,'r'); 
        $str=fread($fpT,filesize($tmpT)); 
        $str=str_replace('{title}',$title,$str); 
        $str=str_replace('{content}',$content,$str); 
        fwrite($fp,$str); 
        fclose($fp); 
        fclose($fpT); 
        echo "OK"; 
    } 
} 
//==================================  
echo "
"; 
echo $_SERVER['DOCUMENT_ROOT']; 
echo "
"; 
echo $_SERVER['PHP_SELF']; 
echo "
"; 
echo date('ymd'); 
echo "
"; 
echo  dirname($_SERVER['PHP_SELF']); 
?>