最近一直在用php+dbfile开发blog，开发过程中学到了不少东西，于是就试着写了一个小留言本。
这个留言本采用php+dbfile，不需要使用数据库，可以放在blog中使用，比如http://www.customyze.com，这个blog中的Tag Board就是这个留言本。

整个留言本需要四个文件，分别是：board.php、index.php、config.php、admin.php。

board.php用来存储数据，可以先在里面添加了一条留言纪录。代码拷贝框
?php$Board=array(array(1081410332,'测试','测试留言本','http://www.piscdong.com'));?
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index.php是留言显示和提交页面。代码拷贝框
?phprequire_once('board.php');function htmlencode($content){$content=htmlspecialchars($content);$content=preg_replace("/r/i","br /",$content);return $content;}if($HTTP_SERVER_VARS['REQUEST_METHOD']=='POST'){$configpath_parts1 = pathinfo($SCRIPT_FILENAME);$time=time();$name=$HTTP_POST_VARS['name'];$url=(preg_match("/^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/i",$HTTP_POST_VARS['url'])
$HTTP_POST_VARS['url']=='')?$HTTP_POST_VARS['url']:'http://'.htmlspecialchars(preg_replace("/https?:///i",'',$HTTP_POST_VARS['url']),ENT_QUOTES);$info=htmlencode($HTTP_POST_VARS['info']);if($name!='' && $info!=''){$Board[]=array($time,$name,$info,$url);}for($i=0;$icount($Board);$i++){$bd=current($Board);$s[]="tarray(".$bd[0].",'".$bd[1]."','".$bd[2]."','".$bd[3]."')";next($Board);}$content="?phpn$Board=array(n".join($s,",n")."n);n?";$filename=$configpath_parts1['dirname'].'/'.'board.php';if(is_writable($filename)
!file_exists($filename)){if(!$handle=fopen($filename,'w')){return false;}if(!fwrite($handle,$content)){return false;}fclose($handle);}else{return false;}header('Location:.');}else{?!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"html xmlns="http://www.w3.org/1999/xhtml"headtitle留言本/titlemeta http-equiv="Content-Type" content="text/html; charset=gb2312" //headbodyform method="post" name="form1" action=""table border="0" cellspacing="5" cellpadding="0" align="center"trtddiv style="overflow:auto;height:250px;border:1px dotted #999999;padding:5px;word-wrap:break-word;width:400px;"?php end($Board);for($i=0;$icount($Board);$i++){$bd=current($Board);$s[]='strong'.($bd[3]!=''?'a href="':'').(preg_match("/^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/i",$bd[3])?'mailto:':'').$bd[3].(($bd[3]!='' && !preg_match("/^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/i",$bd[3]))?'" target="_blank':'').($bd[3]!=''?'"':'').$bd[1].($bd[3]!=''?'/a':'').':/strong '.$bd[2].'br/em-'.date("G:i, M j, Y",$bd[0]).'/em';prev($Board);}echo join($s,'br/br/');?/div/td/trtrtd align="center"名称：input type="text" name="name"/ URL/Email：input type="text" name="url"/br/textarea name="info" cols="40" rows="8"/textareabr/input type="submit" value="发布"//td/tr/table/form/body/html?php } ?
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config.php中存放的是管理留言本的密码，把密码放在单独一个文件中方便修改。代码拷贝框
?php $password='123456'; ?
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admin.php是管理页面，功能很简单，只能删除留言。在删除时需要输入管理密码，管理密码存放在config.php中。代码拷贝框
?phprequire_once('board.php');require_once('config.php');if(isset($HTTP_POST_VARS['id']) && $HTTP_POST_VARS['id']!='' && addslashes($HTTP_POST_VARS['password'])==$password){if(count($Board)1){unset($Board[intval($HTTP_POST_VARS['id'])]);for($i=0;$icount($Board);$i++){$bd=current($Board);$s[]="tarray(".$bd[0].",'".$bd[1]."','".$bd[2]."','".$bd[3]."')";next($Board);}$content="?phpn$Board=array(n".join($s,",n")."n);n?";$configpath_parts1 = pathinfo($SCRIPT_FILENAME);$filename=$configpath_parts1['dirname'].'/'.'board.php';if(is_writable($filename)
!file_exists($filename)){if(!$handle=fopen($filename,'w')){return false;}if(!fwrite($handle,$content)){return false;}fclose($handle);}else{return false;}}header('Location:admin.php');}else{?!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"html xmlns="http://www.w3.org/1999/xhtml"headtitle管理留言本/titlemeta http-equiv="Content-Type" content="text/html; charset=gb2312" //headbodytable width="500" border="0" cellspacing="1" cellpadding="5" align="center" bgcolor="#999999"?php for($i=0;$icount($Board);$i++){$bd=current($Board);$s[]='trtd bgcolor="#'.($i%2!=0?'ececec':'ffffff').'"strong'.($bd[3]!=''?'a href="':'').(preg_match("/^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/i",$bd[3])?'mailto:':'').$bd[3].(($bd[3]!='' && !preg_match("/^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/i",$bd[3]))?'" target="_blank':'').($bd[3]!=''?'"':'').$bd[1].($bd[3]!=''?'/a':'').':/strong '.$bd[2].'br/em-'.date("G:i, M j, Y",$bd[0]).'/em/td'.(count($Board)1?'td bgcolor="#'.($i%2!=0?'ececec':'ffffff').'" align="center"form method="post" action=""input type="submit" value="删除" /input type="hidden" name="id" value="'.$i.'" /input type="password" name="password" //form/td':'').'/tr';next($Board);}echo join($s,'');?/table/body/html?php } ?
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这个留言本还很简单，功能上还不健全，比如没有分页等，还可以继续完善。:-)