权限管理可以想做vip的功能,普通用户和vip用户的功能是不一样的,大致会用到五张表:用户表、角色表、功能表,还有他们之间互相关联的表:用户与角色表、角色与功能表

我用到的五张表如下:



一.首先写的是管理员页面
1.用下拉列表显示用户名:
<div>
<select id= "user" >
<?php
require "../DBDA.class.php" ;
$db = new DBDA();
$sql = "select * from users" ;
$arr = $db ->query( $sql ,1);
foreach ( $arr as $v )
{
echo "<option value='{$v[0]}'>{$v[2]}</option>" ;
}
?>
</select>
</div>

2.因为上面已经造了新对象,所以在显示角色名时直接从SQL语句开始写:
<div>请选择角色:
<?php
$sql = "select * from juese" ;
$arr = $db ->query( $sql ,1);
foreach ( $arr as $v )
{
echo "<input type='checkbox' class='ck' value='{$v[0]}'/>{$v[1]}" ;
}
?>
</div>
<br/>

3.为了修改权限加一个确认保存按钮:
<input type= "button" value= "保存" id= "baocun" />

4.这样,再考虑怎么让数据库中用户本有的角色显示出来,那就是要用到下拉列表和复选框的值了
可以把它写入方法里,然后调用这个方法:
function Xuan()
{
var uid = $( "#user" ).val();
$.ajax({
url: "chuli.php" ,
data:{uid:uid},
type: "POST" ,
dataType: "TEXT" ,
success: function (data){
var js = data.trim().split( "|" );
var ck = $( ".ck" );
ck.prop( "checked" ,false);
for ( var i=0;i<ck.length;i++)
{
var v = ck.eq(i).val();
if (js.indexOf(v)>=0)
{
ck.eq(i).prop( "checked" ,true);
}
}
}
})
}
5.各项值的处理页面:
<?php
require "../DBDA.class.php" ;
$db = new DBDA();
$uid = $_POST [ "uid" ];
$sql = "select jueseid from userinjuese where userid='{$uid}'" ;
echo $db ->strquery( $sql );
效果如下:

6.最后就是保存修改后的值了,可以直接用全部删除在重新写入的方法来进行值的选择;对保存按钮添加单击事件:
Xuan();
$( "#user" ).change( function (){
Xuan();
})
$( "#baocun" ).click( function (){
var uid = $( "#user" ).val();
var str = "" ;
var ck = $( ".ck" );
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,js:str},
type: "POST" ,
dataType: "TEXT" ,
success: function (data){
alert( "保存成功!" );
}
})
})
7.保存的处理页面:
<?php
require "../DBDA.class.php" ;
$db = new DBDA();
$uid = $_POST [ "uid" ];
$js = $_POST [ "js" ];
// 清空原有角色
$sql = "delete from userinjuese where userid='{$uid}'" ;
$db ->query( $sql );
// 添加选中的角色
$ajs = explode ( "," , $js );
foreach ( $ajs as $v )
{
$sql = "insert into userinjuese values('','{$uid}','{$v}')" ;
$db ->query( $sql );
}
效果如下:


下面代码用来copy用,注意AJAX需要引用Jquery
1.guanli.php
<!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>
<script src= "../jquery-3.2.0.min.js" ></script>
</head>
<body>
<h1>用户角色对应</h1>
<div>
<select id= "user" >
<?php
require "../DBDA.class.php" ;
$db = new DBDA();
$sql = "select * from users" ;
$arr = $db ->query( $sql ,1);
foreach ( $arr as $v )
{
echo "<option value='{$v[0]}'>{$v[2]}</option>" ;
}
?>
</select>
</div>
<br/>
<div>请选择角色:
<?php
$sql = "select * from juese" ;
$arr = $db ->query( $sql ,1);
foreach ( $arr as $v )
{
echo "<input type='checkbox' class='ck' value='{$v[0]}'/>{$v[1]}" ;
}
?>
</div>
<br/>
<input type= "button" value= "保存" id= "baocun" />
</body>
<script type= "text/javascript" >
Xuan();
$( "#user" ).change( function (){
Xuan();
})
$( "#baocun" ).click( function (){
var uid = $( "#user" ).val();
var str = "" ;
var ck = $( ".ck" );
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,js:str},
type: "POST" ,
dataType: "TEXT" ,
success: function (data){
alert( "保存成功!" );
}
})
})
function Xuan()
{
var uid = $( "#user" ).val();
$.ajax({
url: "chuli.php" ,
data:{uid:uid},
type: "POST" ,
dataType: "TEXT" ,
success: function (data){
var js = data.trim().split( "|" );
var ck = $( ".ck" );
ck.prop( "checked" ,false);
for ( var i=0;i<ck.length;i++)
{
var v = ck.eq(i).val();
if (js.indexOf(v)>=0)
{
ck.eq(i).prop( "checked" ,true);
}
}
}
})
}
</script>
</html>
2.chuli.php
<?php
require "../DBDA.class.php" ;
$db = new DBDA();
$uid = $_POST [ "uid" ];
$sql = "select jueseid from userinjuese where userid='{$uid}'" ;
echo $db ->strquery( $sql );
3.保存的处理页面 add.php
<?php
require "../DBDA.class.php" ;
$db = new DBDA();
$uid = $_POST [ "uid" ];
$js = $_POST [ "js" ];
// 清空原有角色
$sql = "delete from userinjuese where userid='{$uid}'" ;
$db ->query( $sql );
// 添加选中的角色
$ajs = explode ( "," , $js );
foreach ( $ajs as $v )
{
$sql = "insert into userinjuese values('','{$uid}','{$v}')" ;
$db ->query( $sql );
}
二.完成管理员页面后,下面就是登录页面
1.登录基本页面 login.php
<!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>
</head>
<body>
<h1>登录界面</h1>
<form action= "dlchuli.php" method= "post" >
<div>用户名:<input type= "text" name= "uid" /></div>
<div>密码: <input type= "password" name= "pwd" /></div>
<input type= "submit" value= "登录" />
</form>
</body>
</html>
2.登录处理的页面 dlchuli.php
<?php
session_start();
require "../DBDA.class.php" ;
$db = new DBDA();
$uid = $_POST [ "uid" ];
$pwd = $_POST [ "pwd" ];
$sql = "select pwd from users where uid='{$uid}'" ;
$mm = $db ->strquery( $sql );
if ( $mm == $pwd && ! empty ( $pwd ))
{
$_SESSION [ "uid" ] = $uid ;
header( "location:main.php" );
} else {
echo "输入的用户名或密码有误!" ;
}

3.主页面 main.php
<!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" >
.list {
width:100px;
height:35px;
border:1px solid #36F;
margin:0px 2px 0px 2px;
text-align:center;
vertical-align:middle;
line-height:35px;
}
</style>
</head>
<body>
<h1>主页面</h1>
<?php
session_start();
$uid = "" ;
if ( empty ( $_SESSION [ "uid" ]))<code class = "php comments" > //判断session是否为空</code>
{
header( "location:login.php" );<code class = "php comments" > //空的话就返回登录页面</code>
exit ;
}
$uid = $_SESSION [ "uid" ];
require "../DBDA.class.php" ;
$db = new DBDA();
$sql = "select * from rules where code in(select distinct ruleid from juesewithrules where jueseid in(select jueseid from userinjuese where userid='{$uid}'))" ;
$arr = $db ->query( $sql ,1);
foreach ( $arr as $v )
{
echo "<div code='{$v[0]}' class='list'>{$v[1]}</div>" ;
}
?>
</body>
</html>
选择登陆张三显示他的权限,效果如下:

本文介绍了如何通过PHP实现用户权限管理,包括创建VIP功能,设计用户与角色、角色与功能的关联表,并通过Ajax操作动态展示和保存用户的角色选择。管理员可以为不同角色分配权限,登录页面包含验证和主页面根据登录用户显示相应权限。
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