php 关联数据库的留言板练习

时间：2021-07-26 11:54:11
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>无标题文档</title>

<style type="text/css">

*{ margin:0px auto; padding:0px}

#top{ width:500px; height:300px;}

#bottom{ width:500px; height:150px;}

.nr{ width:100%; height:30px; font-family:微软雅黑; font-size:20px;}

.xm{ color:#3FF; margin-right:10px}

.sj{ color:#0F0; margin-right:10px}

.content{ color:#F00; margin-right:10px}

</style>

<?php

session_start();

$_SESSION["uid"]="lisi";

include("DBDA.php");

$db=new DBDA();

?>

</head>

<body>

<h1>留言板</h1>

<div id="top">

<?php

$sql="select * from liuyanban";

$attr=$db->Query($sql);

foreach($attr as $V)

{

    $sname="select name from users where uid='{$V[1]}'";

    $name=$db->StrQuery($sname);

    echo"<div class='nr'>

    <span class='xm'>{$name}</span>

    <span class='sj'>{$V[3]}</span>

    <span class='content'>{$V[2]}</span>

    </div>";

}

 ?>

</div>

<div id="bottom">

<form action="liuyanbanchuli.php" method="post">

<span>请输入要留言的内容：</span>

<div>

    <textarea style="width:300px; height:100px" name="nr"></textarea>

</div>

<div>

    <input type="submit" value="留言" />

</div>

</form>

</div>

</body>

</html>
<?php

session_start();

include("DBDA.php");

$db=new DBDA();

$nr=$_POST["nr"];

$uid=$_SESSION["uid"];

$times=date("Y-m-d H:i:s");

$sql="insert into liuyanban values('','{$uid}','{$nr}','$times')";

$db->Query($sql,0);

header("location:liuyanban.php");

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