登录：
<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>
登录处理;
<?php
session_start();
$uid = $_POST["uid"];
$pwd = $_POST["pwd"];
include("../DBDA.php");
$db = new DBDA();
$sql = "select count(*) from Users where Uid=‘{$uid}‘ and Pwd = ‘{$pwd}‘";
$z = $db->StrQuery($sql);
if($z == 1)
{
$_SESSION["uid"] = $uid;
header("location:main.php");
}
else
{
header("location:login.php");
}
主界面：
<head>
<?php
session_start();
if(empty($_SESSION["uid"]))
{
header("location:login.php");
exit;
}
$uid = $_SESSION["uid"];
include("../DBDA.php");
$db = new DBDA();
?>
<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}
#menu{
width:100%;
height:40px;
}
.cd{
width:100px;
height:40px;
background-color:#60C;
color:white;
font-size:18px;
text-align:center;
line-height:40px;
vertical-align:middle;
float:left;
}
.cd:hover{
background-color:#F33;
cursor:pointer;
}
</style>
</head>
<body>
<br />
<br />
<center><h1>主页面</h1></center>
<br />
<a href="login.php">退出 <?php echo $uid; ?></a>
<br />
<br />
<br />
<div id="menu">
<div class="cd">权限管理</div>
<?php
//根据用户名找到所对应的角色代号
$sjs = "select JueSeId from UserInJueSe where UserId =‘{$uid}‘ ";
$ajs = $db->Query($sjs);
//根据角色代号找到对应的功能
$all = array();//存储该用户所有的功能代号
foreach($ajs as $vjs)
{
$sgn = "select RuleId from JueSeWithRules where JueSeId =‘{$vjs[0]}‘";
$agn = $db->Query($sgn);
foreach($agn as $vgn)
{
array_push($all,$vgn[0]);
}
}
$all = array_unique($all);
//显示菜单
foreach($all as $vall)
{
$sn = "select Name from Rules where Code = ‘{$vall}‘";
$name = $db->StrQuery($sn);
echo "<div class=‘cd‘>{$name}</div>";
}
?>
</div>
</body>
添加角色：
<body>
<h1>权限管理</h1>
<div>请选择用户：
<select id="user">
<?php
include("../DBDA.php");
$db = new DBDA();
$sql = "select * from Users";
$attr = $db->Query($sql);
foreach($attr as $v)
{
echo "<option value=‘{$v[0]}‘>{$v[2]}</option>";
}
?>
</select>
</div>
<br />
<div>
<div>请选择角色：</div>
<br />
<div>
<?php
$sqljs = "select * from JueSe";
$attrjs = $db->Query($sqljs);
foreach($attrjs as $v)
{
echo "<input class=‘js‘ type=‘checkbox‘ value=‘{$v[0]}‘ /> {$v[1]} ";
}
?>
</div>
</div>
<br />
<div>
<input type="button" value="确定" id="btn" />
</div>
</body>
<script type="text/javascript">
$(document).ready(function(e) {
ShowJueSe();
$("#user").change(function(){
ShowJueSe();
})
function ShowJueSe()
{
var uid = $("#user").val();
$.ajax({
url:"seljuese.php",
data:{uid:uid},
type:"POST",
dataType:"TEXT",
success: function(data){
var shuju = data.split("|");
var ck = $(".js");
ck.prop("checked",false);
for(var i=0;i<ck.length;i++)
{
var v = ck.eq(i).val();
if($.inArray(v,shuju)>=0)
{
ck.eq(i).prop("checked",true);
}
}
}
});
}
$("#btn").click(function(){
var uid = $("#user").val();
var ck = $(".js");
var str = "";
for(var i=0;i<ck.length;i++)
{
if(ck.eq(i).prop("checked"))
{
str = str+ck.eq(i).val()+"|";
}
}
str = str.substr(0,str.length-1);
$.ajax({
url:"add.php",
data:{uid:uid,juese:str},
type:"POST",
dataType:"TEXT",
success: function(data){
if(data.trim()=="OK")
{
alert("添加成功！");
}
else
{
alert("添加失败！");
}
}
});
})
});
</script>
<?php
include("../DBDA.php");
$db = new DBDA();
$uid = $_POST["uid"];
$js = $_POST["juese"];
$juse = explode("|",$js);
$bs = true;
//清空该用户具有的所有角色，先清空，再添加
$sqldel = "delete from UserInJueSe where UserId = ‘{$uid}‘ ";
if(!$db->Query($sqldel,0))
{
$bs = $bs && false;
}
//添加角色信息
foreach($juse as $v)
{
$sql = "insert into UserInJueSe values(‘‘,‘{$uid}‘,‘{$v}‘)";
if(!$db->Query($sql,0))
{
$bs = $bs && false;
}
}
if($bs)
{
echo "OK";
}
else
{
echo "NO";
}
<?php
include("../DBDA.php");
$db = new DBDA();
$uid = $_POST["uid"];
$sql = "select JueSeId from UserInJueSe where UserId = ‘{$uid}‘";
echo $db->StrQuery($sql);
原文：http://www.cnblogs.com/1116zsc/p/5544758.html