留言板有关问题

留言板问题求助
先问一个关于乱码的问题，
在my.ini中设置了  [client] default-character-set=utf8   [mysqld]  default-character-set=utf8     然后重启wamp，phpmyadmin就连接不上了，就是#2002 那个套接字错误提示，然后我就把my.ini刚做的修改又改了回去，还是连接不上，（我把修改撤销了应该可以了呀？？问题1）最后把localhost改为127.0.0.1  才恢复正常
问题二： 上述操作之后


最后问题


1、conn文件

<?php<br />
   $conn = mysql_connect("localhost","root","") or die("Can't connect database: ".mysql_error());<br />
if($conn)<br />
   echo "链接成功！";<br />
   mysql_select_db("liuyan");<br />
   mysql_query("set names 'gbk'");<br />
?>

2、input文件

<form name = "msgform" method = "post" action = "write.php" enctype = "multipart/form-data" onsubmit = "return checkMessage()"><br />
//javascript略去了<br />
<table width = "64%" border = "0" cellspacing = "1" cellpadding = "3" bgcolor = "#66CCFF" align = "center"><br />
<tr><br />
<td width = "48%">用 户：<br />
  <input type = "txet" name = "username"><br />
</td><br />
 <br />
</tr><br />
 <br />
<tr><br />
<td colspan = "2">标 题：<br />
<input type = "text" name = "title" size = "60" maxlength = "50"><br />
</td><br />
</tr><br />
<tr><br />
<td colspan = "2"><br />
<textarea name = "content" rows = "10" cols = "100"></textarea><br />
</td><br />
</tr><br />
<tr><br />
<td><br />
<div align = "right"><br />
<input type = "submit" name = "sub" value = "提交"><br />
</div><br />
</td><br />
<td><br />
<input type = "reset" name = "Rewrite" value = "重写"><br />
</td><br />
</tr><br />
 <br />
</table><br />
</form>

3、write文件

<?php <br />
include("conn.php");<br>
if(isset($_POST['username'])){<br>
   $username = $_POST['username'];<br>
   $title = $_POST['title'];<br>
   $content = $_POST['content'];<br>
   $sql = "insert into easy values('$username','$title','$content',now())";<br>
   mysql_query($sql) or die("插入失败: ".mysql_error());<br>
}<br>
?><br>
<?php <br />
include("conn.php");<br>
   $rowsPerPage = 10;<br>
   $row = mysql_fetch_array(mysql_query("select count (*) as c from easy"));         //查询总记录数...这点书上看的，不太懂，求解释<br>
   $rows = $row['c'];                      //得到记录数<br>
   <br>
   /*  <br>
   $a = "select * from easy";<br>
   $b = mysql_query($a);<br>
   $rows = mysql_num_rows($b);<br>
这个可以么？  另外这个和上面那个有什么区别？？   <br>
   */<br>
   <br>
   $pages = ceil($rows/$rowsPerPage);     //计算页数 <div class="clear">
                 
              
              
        
            </div>