PHP 留言板

<form action="loginchuli.php" method="post">
<div>用户名：<input type="text" name="uid" /></div>
<div>密码：<input type="text" name="pwd" /></div>
<input type="submit" value="登录" />
</form>

<?php
session_start();
$uid = $_POST["uid"];
$pwd = $_POST["pwd"];

include("../DBDA.php");
$db = new DBDA();

$sql = "select count(*) from yuangong where username='{$uid}' and password = '{$pwd}'";

$z = $db->StrQuery($sql);

if($z == 1)
{
$_SESSION["uid"] = $uid;
header("location:main.php");
}
else
{
header("location:login.php");
}

<br /><br />
<a href="fabu.php">发布信息</a> <a href="tuichu.php">退出系统</a>
<br />
<br />
<table width="100%" border="1" cellpadding="0" cellspacing="0">
<tr>
<td>发送人</td>
<td>发送时间</td>
<td>接收人</td>
<td>信息内容</td>
</tr>
<?php
session_start();

if(empty($_SESSION["uid"]))
{
header("location:login.php");
exit;
}

$uid = $_SESSION["uid"];

include("../DBDA.php");
$db = new DBDA();

$sql = "select * from liuyan where recever='{$uid}' or recever='suoyou'";

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

foreach($attr as $v)
{
//处理发送者姓名
$sqlname = "select Name from yuangong where username='{$v[1]}'";
$name = $db->StrQuery($sqlname);

//处理接收者姓名
$jieshou = "";
if($v[2]=="suoyou")
{
$jieshou = "所有人";
}
else
{
$sqln = "select Name from yuangong where username='{$uid}'";
$jieshou = $db->StrQuery($sqln);
}

echo "<tr>
<td>{$name}</td>
<td>{$v[3]}</td>
<td>{$jieshou}</td>
<td>{$v[4]}</td>
</tr>";
}

?>
</table>

<?php
session_start();

if(empty($_SESSION["uid"]))
{
header("location:login.php");
exit;
}

$uid = $_SESSION["uid"];
include("../DBDA.php");
$db = new DBDA();

?>
<br /><br />
<a href="main.php">查看信息</a> <a href="tuichu.php">退出系统</a>

<br />
<h2>信息发送</h2>

<form action="fschuli.php" method="post">
<div>接收人：
<select name="jieshou">
<option value="suoyou">所有人</option>
<?php
$sql = "select firend from firend where me='{$uid}'";
$attr = $db->Query($sql);

foreach($attr as $v)
{
$sqln = "select Name from yuangong where username='{$v[0]}'";
$name = $db->StrQuery($sqln);

echo "<option value='{$v[0]}'>{$name}</option>";
}

?>
</select>
</div>
<br />
<div>
信息内容：
<textarea name="neirong">
</textarea>
</div>
<br />
<div>
<input type="submit" value="发送" />
<input type="reset" value="复位" />
</div>
</form>

<?php
session_start();

include("../DBDA.php");
$db = new DBDA();

$jieshou = $_POST["jieshou"];
$neirong = $_POST["neirong"];
$uid = $_SESSION["uid"];
$time = date("Y-m-d H:i:s");

$sql = "insert into liuyan values('','{$uid}','{$jieshou}','{$time}','{$neirong}',false)";

if($db->Query($sql,0))
{
header("location:fabu.php");
}
else
{
echo "发布失败！";
}

<?php
session_start();

unset($_SESSION["uid"]);
header("location:login.php");