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PHP学习笔记:php网络留言板

时间：2015-07-06 21:25:21      阅读：266      评论：0      收藏：0      [点我收藏+]

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说明：代码来源《PHP和MySQL Web应用开发》一书，还有就是代码有些是经过修改的，经过我的测验全部都可以用。

　　　通过自己的修改实现中文数据的输入，主要是编码的问题。

　　   本来还想加添加表情的功能，不过今天时间有限，就先做到这，后续有时间再添加那个表情功能。

 

本示例的数据库脚本　~~~    MySQL执行语句：　　source d:\test\book.sql;

CREATE DATABASE IF NOT EXISTS book
COLLATE ‘gb2312_chinese_ci‘;

USE book;
CREATE TABLE IF NOT EXISTS Users (
UserName VARCHAR(50) PRIMARY KEY, 
UserPwd VARCHAR(50), 
ShowName VARCHAR(50));

CREATE TABLE IF NOT EXISTS  Content (
ContId  INT  AUTO_INCREMENT  PRIMARY KEY,
Subject VARCHAR(200)  NOT NULL,
Words  VARCHAR(1000) NOT NULL,
UserName  VARCHAR(50)  NOT NULL, 
Face  VARCHAR(50),
Email  VARCHAR(50),
Homepage  VARCHAR(50),
CreateTime  DATETIME,
UpperId  INT
);

INSERT INTO Users VALUES(‘admin‘, ‘pass‘, ‘admin‘);

技术分享

Class文件包含2个文件 Content.php（Content类） 和 Users.php （Users类） 。

Users.php

技术分享 
<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″> 
<?PHP
    class Users
    {
        var $conn;

        public $UserName;        // 鐢ㄦ埛鍚?
        public $UserPwd;        // 鐢ㄦ埛瀵嗙爜
        public $ShowName;        // 鏄剧ず鍚嶇О
        
                
        function __construct() {
            // 杩炴帴鏁版嵁搴?
            $this->conn = mysqli_connect("localhost", "root", "123456", "book"); 
            mysqli_query($this->conn, "SET NAMES utf-8");
        }
        
        function __destruct() {
            // 鍏抽棴杩炴帴
            mysqli_close($this->conn);
        }

        // 鍒ゆ柇鎸囧畾鐢ㄦ埛鏄惁瀛樺湪
        function exists($user)
        {
            $result = $this->conn->query("SELECT * FROM Users WHERE UserName=‘" . $user . "‘");
            if($row = $result->fetch_row()) {
                $this->UserName = $user;
                $this->UserPwd = $row[1];
                $this->ShowName = $row[2];
                return true;
            }
            else
                return false;
        }
                
        // 鍒ゆ柇鎸囧畾鐨勭敤鎴峰悕鍜屽瘑鐮佹槸鍚﹀瓨鍦?
        function verify($user, $pwd)
        {            
            $sql = "SELECT * FROM Users WHERE UserName=‘" . $user . "‘ AND     UserPwd=‘" . $pwd . "‘";
            $result = $this->conn->query($sql);
            if($row = $result->fetch_row())  
            {
                $this->UserName = $user;
                $this->UserPwd = $pwd;
                $this->ShowName = $row[2];
                return true;
            }
            else
                return false;
        }
        
        // 鎻掑叆鏂拌褰?
        function insert()
        {
            $sql = "INSERT INTO Users VALUES(‘" . $this->UserName . "‘, ‘" . $this->UserPwd . "‘, ‘" 
                . $this->ShowName . "‘)";
            $this->conn->query($sql);
        }
        
        // 鏇存柊鏄剧ず鍚嶇О
        function updateShowName()
        {
            $sql = "UPDATE Users SET ShowName=‘" . $this->ShowName . "‘ WHERE UserName=‘" . $this->UserName . "‘";
            $this->conn->query($sql);
        }
        
        // 鏇存柊瀵嗙爜
        function updatePassword() {        
            $sql = "UPDATE Users SET UserPwd=‘" . $this->UserPwd . "‘ WHERE UserName=‘" . $this->UserName . "‘";
            $this->conn->query($sql);
        }        

        // 鍒犻櫎鐢ㄦ埛
        function delete()
        {
            $sql = "DELETE FROM Users WHERE UserName=‘" . $this->UserName . "‘";
            $this->conn->query($sql);
        }            
        
        function load_users()
        {
            $sql = "SELECT * FROM Users";
            $result = $this->conn->query($sql);
            Return $result;
        }
    }
?>
View Code

Content.php

技术分享 
<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″> 
<?php 
    class Content
    {
        var $conn;
        public $ContId;        
        public $Subject;//public $words;
        public $words;
        public $UserName;    
        public $Face;        
        public $Email;        
        public $Homepage;    
        public $CreateTime;    
        public $UpperId;        
        
                
        function __construct() {
            $this->conn = mysqli_connect("localhost", "root", "123456", "book"); 
            mysqli_query($this->conn, "SET NAMES utf-8");
        }
        
        function __destruct() {
            mysqli_close($this->conn);
        }
                
        
        function GetInfo($Id)
        {            
            $sql = "SELECT * FROM Content WHERE ContId=" . $Id;
            $result = $this->conn->query($sql);
            if($row = $result->fetch_row())  
            {
                $this->ContId = $Id;
                $this->Subject = $row[1];
                $this->words = $row[2];
                $this->UserName = $row[3];
                $this->Face = $row[4];
                $this->Email = $row[5];
                $this->Homepage = $row[6];
                $this->CreateTime = $row[7];
                $this->UpperId = (int)$row[8];
            }
        }            
        
        function GetRecordCount()
        {            
            $sql = "SELECT COUNT(*) FROM Content";
            $result = $this->conn->query($sql);
            if($row = $result->fetch_row())  
                Return (int)$row[0];
            else
                Return 0;        
        }
                
        function insert()
        {
            $sql = "INSERT INTO Content (Subject, words, UserName, Face, Email, Homepage, CreateTime, UpperId) VALUES(‘" . $this->Subject . "‘, ‘" . $this->Words . "‘, ‘" .  $this->UserName . "‘, ‘" . $this->Face . "‘, ‘" . $this->Email . "‘, ‘" . $this->Homepage . "‘, ‘" . $this->CreateTime . "‘, " . $this->UpperId . ")";
            $this->conn->query($sql);
        }    
        
        function delete($Id)
        {
            $sql = "DELETE FROM Content WHERE ContId=" . $Id . " OR UpperId=" . $Id;
            $this->conn->query($sql);
        }            
        
        function load_content_byUpperid($uid)
        {
            $sql = "SELECT * FROM Content WHERE UpperId=" . $uid . " ORDER BY CreateTime DESC";
            $result = $this->conn->query($sql);
            Return $result;
        }

        function load_content_byPage($pageNo, $pageSize)
        {
            $sql = "SELECT * FROM Content WHERE UpperId=0 ORDER BY CreateTime DESC LIMIT " . ($pageNo-1) * $pageSize . "," . $pageSize;
            $result = $this->conn->query($sql);
            Return $result;
        }
    }
?>
View Code

index.php　　留言板主页

技术分享 
<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″> 
<?PHP    
error_reporting(0); 
    $UserName = $_POST[‘UserName‘];
    if($UserName != "")
        include(‘ChkPwd.php‘); 
    include(‘Show.php‘); 
    include("Class\Content.php");
    $objContent = new Content();    // 定义Content对象，用于访问表Content
    $pageSize = 5; // 设置每页显示留言记录的数量
    @$pageNo = (int)$_GET[‘Page‘];    // 获取当前显示的页码 
    $recordCount = $objContent->GetRecordCount();  
    // 处理不合法的页码
    if($pageNo < 1)
        $pageNo = 1;
    // 计算总页数
    if( $recordCount ){ 
        //如果记录总数量小于每页显示的记录数量，则只有一页
        if( $recordCount < $pageSize ){ 
            $pageCount = 1; 
        }  
        //取记录总数量不能整除每页显示记录的数量，则页数等于总记录数量除以每页显示记录数量的结果取整再加1
        if( $recordCount % $pageSize ){ 
            $pageCount = (int)($recordCount / $pageSize) + 1;
        }
        else {    //如果没有余数，则页数等于总记录数量除以每页显示记录的数量
            $pageCount = $recordCount / $pageSize; 
        }
    }
    else{  // 如果结果集中没有记录，则页数为0
        $pageCount = 0;
    }    
    
    if($pageNo > $pageCount)
        $pageNo = $pageCount;  
?>
<html>
<head>
<title>网络留言板</title>
<style>
<!--
.main        { font-size: 10pt }
-->
</style>
<script language="JavaScript">
function newwin(url) {
  var newwin=window.open(url,"newwin","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width=550,height=460");
  newwin.focus();
  return false;
}
</script>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"></head>

<body topmargin="0" vlink="#000000" link="#000000">

<div align="center">
  <center>
<table width="714" border="0" height="218" cellspacing="0" cellpadding="0">
<tr>
    <td height="18" class="main" bordercolorlight="#0000FF" bordercolordark="#00FFFF" bgcolor="#3399FF" background="images/b3.gif">
     <?PHP 
         if(!$_SESSION[‘Passed‘])  { 
?>
    <form method="POST" action="<?PHP $_SERVER[‘PHP_SELF‘] ?>" name="myform"> 
    &nbsp;<font size="2">用户名：</font><input type="text" name="UserName" size="12">&nbsp;&nbsp;              
     密码: <input type="password" name="UserPwd" size="12"> <input type="submit" value="登录" name="B1">&nbsp; 
     <?PHP
        }
        else {
            echo("<b>欢迎管理员光临!</b>");
        }
     ?>
     [ <a target="_blank" href="newRec.php"  onclick="return newwin(this.href)">
    我要留言</a> ]
    <?PHP 
        if($_SESSION[‘Passed‘])  {
            echo(‘[<a href="logout.php">退出登录</a>]‘);
        }
    ?> </td> </form>
</tr>
</center>
<tr> <td height="161" class="main"> <?PHP ShowList($pageNo, $pageSize); ?> </td></tr>
<tr> <td height="15"> </td></tr>   
<tr>
    <td height="13" class="main" background="images/b3.gif"> <?PHP ShowPage($pageCount, $pageNo); ?></td>
</tr>
<tr> <td height="15"> </td></tr>   
  </table>
</body>
View Code

ChkPwd.php　　进行身份验证

技术分享 
<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″> 
<?PHP
    include(‘class\Users.php‘);        // 包含Users类
    $user = new Users();
    session_start();
    //如果尚未定义Passed对象，则将其定义为False，表示没有通过身份认证
    if(!isset($_SESSION[‘Passed‘]))    {
        $_SESSION[‘Passed‘] = False;
    }
      // 如果$_SESSION[‘Passed‘]=False,则表示没有通过身份验证
    if($_SESSION[‘Passed‘]==False) {    
        // 读取从表单传递过来的身份数据
        $UserName = $_POST[‘UserName‘];
        $UserPwd = $_POST[‘UserPwd‘];
        if($UserName == "")
              $Errmsg = "请输入用户名和密码";
        else  {
            // 验证用户名和密码
            if(!$user->verify($UserName, $UserPwd))  {
?>

        <script language="javascript">
            alert("用户名或密码不正确!");
        </script>";
        <?PHP
            }
            else  { // 登录成功 ?>
                    <script language="javascript">
            alert("登录成功!");
        </script>
        <?PHP
                $_SESSION[‘Passed‘] = True;
                $_SESSION[‘UserName‘] = $UserName;
                $_SESSION[‘ShowName‘] = $user->ShowName;
                //$_SESSION[‘ShowName‘] = $row[2];
            }
        } 
    }    
    // 经过登录不成功，则画出登录表单MyForm
      if(!$_SESSION[‘Passed‘])  {  
?>
        <script language="javascript">
          history.go(-1);
        </script>
<?PHP    }   ?>
View Code

logout.php　　按退出时执行的，清空$_SESSION的某些数据

技术分享 
<?PHP
    session_start();
    unset($_SESSION[‘Passed‘]);
    unset($_SESSION[‘UserName‘]);
    unset($_SESSION[‘ShowName‘]);

    header("Location: index.php");
?>
View Code

Show.php　　显示主题留言，主要存放ShowPage()和ShowList()两个函数

技术分享 
<head>
    <meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″> 
<style>
<!--
.main        { font-size: 10pt }
-->
</style>
<script language="JavaScript">
function newwin(url) {
  var newwin=window.open(url,"newwin","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width=550,height=460");
  newwin.focus();
  return false;
}
</script>
</head>
<?PHP
function ShowList( $pageNo, $pageSize )  {
  ?>
<div align="center">
  <center>
  <table border="1" width="738" bordercolor="#3399FF" cellspacing="0" cellpadding="0" height="46" bordercolorlight="#FFCCFF" bordercolordark="#CCCCFF">
    
<?PHP 
    $existRecord = False;        
    $objContent = new Content();
    $results = $objContent->load_content_byPage($pageNo, $pageSize);
    // 使用while语句显示所有$results中的留言数据
    while($row = $results->fetch_row())  { 
        $existRecord = True;
?>    <tr>
      <td width="148" height="16" class="main" align=center>  <br>
        <img border="0" src="images/<?PHP echo($row[4]); /* 输入Face字段的内容*/ ?>.gif" width="100" height="100"><br>
      <?PHP echo($row[3]); /* 输出UserName字段的值 */?><br><br>
          <a href="<?PHP echo($row[6]); /* 输出Homepage字段的值 */?>" target=_blank>
        <img border="0" src="images/homepage.gif" width="16" height="16"></a>
          <a href="mailto:<?PHP echo($row[5]); /* 输出Email字段的值 */ ?>">
        <img border="0" src="images/email.gif" width="16" height="16"></a><br>
        
        <?PHP if($_SESSION["UserName"] <> "")  {?>
             <a href=newRec.php?UpperId=<?PHP echo($row[0]); /*ContId*/ ?> target=_blank onclick="return newwin(this.href)">回复</a>  
             <a href=deleteRec.php?ContId=<?PHP echo($row[0]); /*ContId*/ ?>  target=_blank onclick="return newwin(this.href)">删除</a>
         <?PHP } /* end of if */ ?>       
       </td>       
      <td width="584" height="16" class="main" align="left" valign="top">
      <br><b>标题:<?PHP echo($row[1]); /* Subject */ ?> &nbsp;&nbsp;&nbsp; 时间: <?PHP echo($row[7]); /* CreateTime */ ?></b><hr><br>
      <?PHP 
            echo($row[2]); /* Words */     
            // 下面用于显示所有回复留言
            $content = new Content();    // 定义Content对象
            $sub_results = $content->load_content_byUpperid($row[0]);
            while($subrow = $sub_results->fetch_row())  {
                echo("<BR><BR><BR>"); ?>&nbsp;&nbsp;&nbsp;
          <img border="0" src="images/<?PHP echo($subrow[4]); /* Face */ ?>.gif" width="50" height="50">
          <?PHP echo($subrow[3]); /* UserName") */ ?>
          <a href="<?PHP echo($subrow[6]); /*homepage*/ ?>" target=_blank>
          <img border="0" src="images/homepage.gif" width="16" height="16"></a>
            <a href="mailto:<?PHP echo($subrow[5]); /* email */ ?>">
          <img border="0" src="images/email.gif" width="16" height="16"></a>&nbsp;&nbsp;&nbsp;
          <b>&nbsp;&nbsp;&nbsp; 标题:<?PHP echo($subrow[1]); /*Subject */?> &nbsp;&nbsp;&nbsp; 时间: <?PHP echo($subrow[7]); /* CreateTime */ ?></b><hr><br>
           &nbsp;&nbsp;&nbsp;  <?PHP echo($subrow[2]); /* Words */ ?>

      <?PHP
            } // end of while
        ?>
      </td>
    </tr>
<?PHP
    } // end of while 
    if(!$existRecord)   {
?>
  <tr>
    <td width="148" height="16" align=center class="main">没有留言数据</td>       
  </tr>
<?PHP
    }  // end of if
   echo("</table></center></div>");
   } // end of function
 ?>

<?PHP
// $recordCount表示返回结果集中的总页数，$pageNo表示当前页码
function ShowPage( $pageCount, $pageNo )  {
    echo("<table width=738> <tr> <td align=right class=main>");
  
    // 显示第一页，如果当前页就是第一页，则不生成链接
    if($pageNo>1)
        echo("<A HREF=index.php?Page=1>第一页</A>&nbsp;&nbsp;");
    else
        echo("第一页&nbsp;&nbsp;");
    // 显示上一页，如果不存在上一页，则不生成链接
    if($pageNo>1)
        echo("<A HREF=index.php?Page=" . ($pageNo-1) . ">上一页</A>&nbsp;&nbsp;");
    else
        echo("上一页&nbsp;&nbsp;");
    // 显示下一页，如果不存在下一页，则不生成链接
    if($pageNo<>$pageCount)
        echo("<A HREF=index.php?Page=" . ($pageNo+1) . ">下一页</A>&nbsp;&nbsp;");
    else
        echo("下一页&nbsp;&nbsp;");
    // 显示最后一页，如果当前页就是最后一页，则不生成链接
    if($pageNo <> $pageCount)
        echo("<A HREF=index.php?Page=" . $pageCount . ">最后一页</A>&nbsp;&nbsp;");
    else
        echo("最后一页&nbsp;&nbsp;");

    // 输出页码
    echo($pageNo . "/" . $pageCount . "</td></tr></table>");
}
?>
View Code

newRec.php　　添加新留言的代码

技术分享 
<html>

<head>
    <meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″> 
<style>
<!--
.main        { font-size: 9pt }
-->
</style>
<script Language="JavaScript">
function ChkFields() {
    if (document.formadd.name.value==‘‘) {
        window.alert ("请输入姓名！");
        formadd.name.focus();
        return false
    }
    if (document.formadd.Subject.value==‘‘) {
        window.alert ("请输入主题！");
        formadd.Subject.focus();
        return false
    }
    if (document.formadd.Subject.value.length>50) {
        window.alert ("主题超长！");
        formadd.Subject.focus();
        return false
    }
    if (document.formadd.Words.value.length>1000) {
        window.alert ("留言内容超长！");
        formadd.Words.focus();
        return false
    }

    return true
}

</script>

<meta http-equiv="Content-Language" content="zh-cn">
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta name="GENERATOR" content="Microsoft FrontPage 6.0">
<meta name="ProgId" content="FrontPage.Editor.Document">
<title>添加新留言</title>
</head>


<p align="center">添加新留言（*为必填项）</p>

<?PHP
    // 获取上级留言的编号
    $UpperId = (int)$_GET[‘UpperId‘];  
    ?>

<form method="POST" action="recSave.php?UpperId=<?PHP echo($UpperId); ?>" name="formadd" onsubmit = "return ChkFields()">
 <table align="center" border="1" cellpadding="1" cellspacing="1" width="473" bordercolor="#008000" bordercolordark="#FFFFFF" height="108">
      <tr>
        <td align=left bgcolor="#FFCCFF" width="77" height="24" class="main">
        您的姓名<font color="#FF0000">*</font></td>
        <td width="380" height="24" class="main">
        <input name="name" size="51"></td>
      </tr>
      <tr>
        <td align=left bgcolor="#FFCCFF" width="77" height="23" class="main">
        电子邮件</td>
        <td width="380" height="23" class="main">
        <input name="email" size="51"></td>
      </tr>
      <tr>
        <td align=left bgcolor="#FFCCFF" width="77" height="23" class="main">
        主页地址</td>
        <td width="380" height="23" class="main">
        <input name="homepage" size="51"></td>
      </tr>
      <tr>
        <td align=left bgcolor="#FFCCFF" width="77" height="23" class="main">留言标题<font color="#FF0000">*</font></td>
        <td width="380" height="23" class="main"><input name="Subject" size="51"></td>
      </tr>
      <tr>
        <td align=left bgcolor="#FFCCFF" width="77" height="43" class="main" valign="top">具体内容<font color="#FF0000">*</font></td>
        <td width="380" height="43" class="main" valign="top"><textarea rows="4" name="Words" cols="50"></textarea></td>
      </tr>
        <tr>
        <td align=left bgcolor="#FFCCFF" width="165" class="main" valign="top">请选择头像</td>
        <td width="292"  class="main" valign="top"><select size="1" name="logo" onChange="showlogo()">
            <option selected value="1">1</option>
            <option value="2">2</option>
            <option value="3">3</option>
            <option value="4">4</option>
            <option value="5">5</option>
            <option value="6">6</option>
            <option value="7">7</option>
            <option value="8">8</option>
            <option value="9">9</option>
            <option value="10">10</option>
            <option value="11">11</option>
            <option value="12">12</option>
            <option value="13">13</option>
            <option value="14">14</option>
            <option value="15">15</option>
          </select>&nbsp;&nbsp; <img src="images/1.gif" name="img">
        <script language="javascript">  
          
          function showlogo(){
            document.images.img.src = "images/" + document.formadd.logo.options[document.formadd.logo.selectedIndex].value + ".gif";
          }
        </script>
       </td>
      </tr>
  </table> 
  <p align="center"><input type="submit" value="提交" name="B1"><input type="reset" value="全部重写" name="B2"></p>
</form>
<p align="center">　</p>

</body>

</html>
View Code

recSave.php　　将新留言的相关数据写入MySQL数据库之中

技术分享 
<html>
<head>
<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″> 
<title>保存留言信息</title>

</head>
<body>
<?PHP
   date_default_timezone_set(‘Asia/Chongqing‘); //系统时间差8小时问题
    include(‘Class\Content.php‘);
    $objContent = new Content();
    // 从参数或表单中接收数据到变量中
    $objContent->UserName = $_POST["name"];
    $objContent->Subject = $_POST["Subject"];
    $objContent->Words = $_POST["Words"];
    $objContent->Email = $_POST["email"];
    $objContent->Homepage = $_POST["homepage"];
    $objContent->Face = $_POST["logo"];
    $objContent->UpperId = $_GET["UpperId"];
    if($objContent->UpperId == "")
        $objContent->UpperId = 0;
    // 获取当前当前时间
    $now = getdate();
    $objContent->CreateTime = $now[‘year‘] . "-" . $now[‘mon‘] . "-" . $now[‘mday‘] 
        . "  " . $now[‘hours‘] . ":" . $now[‘minutes‘] . ":" . $now[‘seconds‘];
    
    $objContent->insert();
    echo("<h2>信息已成功保存！</h2>");
?>
</body>
<Script language="javascript">
  //打开此脚本的网页将被刷新
  opener.location.reload();
  //停留800毫秒后关闭窗口
  setTimeout("window.close()",2800);
</Script>
</html>
View Code

deleteRec.php　　删除留言代码

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<html>
<head>
<title>删除用户信息</title>
</head>
<body>
<?PHP
    include(‘ChkPwd.php‘);
    include(‘Class\Content.php‘);
    $ContId = $_GET["ContId"];    // 获取要删除的留言记录编号
    $objContent = new Content();
    $objContent->delete($ContId);        // 删除留言记录
    echo("已成功删除留言。");
?>
<Script Language="JavaScript">
  //打开此脚本的网页将被刷新
  opener.location.reload();
  //停留800毫秒后关闭窗口
  setTimeout("window.close()",800);
</Script>
</body>
</html>
View Code

 

界面截图：

未登录界面

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已登录界面

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留言界面

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PHP学习笔记:php网络留言板

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原文地址：http://www.cnblogs.com/yzmb/p/4625146.html
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