教你快速實現(xiàn)PHP全站權限驗證

作者：佚名 2009-12-09 17:19:38

開發(fā) 后端

PHP全站權限驗證對于初學PHP語言的人來說還是比較苦難的。希望通過本文介紹的內容大家可以充分掌握PHP語言在這一方面的實現(xiàn)方法。

PHP程序員在進行網(wǎng)站開發(fā)時，通常都會遇到與權限驗證相關的問題。下面我們就為大家具體介紹有關PHP全站權限驗證的實現(xiàn)方法。#t#

PHP全站權限驗證代碼示例：

< html>
< head>< title>e
< /title>
< /head>
< body>
< form action="login.php"
method="POST" >

用戶：

< input type="text"
name="username">
< br>

密碼：

< input type="password"
name="password">
< input type ="Submit"
value ="確定">
< input type ="reset"
value ="取消">
< /form>
< /body>
< /html>

----------------conn.php--------------------------

< ?php
$host='127.0.0.1';
$mysql_user='root';
$mysql_password='qeephp';
$mydb='learn';
$link = mysql_connect($host,
$mysql_user , $mysql_password)
or die("無法連接數(shù)據(jù)庫: "
. mysql_error());
mysql_select_db($mydb);
?>

----------------------------login.php------------------

< ?  
$username=$_POST['username'];  
$password=$_POST['password'];  
if ($username==""){  
echo "< script language='javascript'> 
alert('非法操作!'); location.href=
'index.php'; < /script>";  
exit;  
}  
require_once("conn.php");  
$sql="SELECT * FROM admin where
 username='$username'";  
$result=mysql_query($sql);  
$row=mysql_fetch_array($result);  
if ($row['username']==""){  
echo "< script language='javascript'> 
alert('用戶名有誤!'); location.href=
'index.php'; < /script>";  
exit;  
}else if ($row['password']!=$password){  
echo "< script language='javascript'> 
alert('密碼有誤!'); location.href='index
.php'; < /script>";  
echo "密碼有誤";  
exit;  
}else{  
session_start();  
$_SESSION['user']=$username;  
echo "< script language='javascript'> 
alert('登陸成功!'); location.href=
'list.php'; < /script>";  
}  
?>

------------------check.php--------------------

< ?  
session_start();   
if(! isset($_SESSION['user']))   
{   
echo "< script language='javascript'> 
alert('非法操作!'); location.href=
'index.php'; < /script>";  
exit;  
}else{  
echo "歡迎".$_SESSION['user']
."登錄系統(tǒng)";   
}  
?>

---------------------list.php-----------------

< ?  
include 'check.php';  
?> 
< html> 
< head> 
< script type="text/javascript" 
src="player/swfobject.js">< /script> 
< /head> 
< body> 
< h3>單個文件播放:< /h3> 
< p id="player1">< a href="
http://www.macromedia.com/go/
getflashplayer">獲取播放器< /a> 觀看電影< /p> 
< script type="text/javascript"> 
var s1 = new SWFObject("player/
flvplayer.swf","single","300","170","7");  
s1.addParam("allowfullscreen","true");  
s1.addVariable("file","player/ad.flv");  
s1.addVariable("image","player/preview.jpg");  
s1.addVariable("width","300");  
s1.addVariable("height","170");  
s1.write("player1");  
< /script> 
< h3>playlist file, with different 
colors:< /h3> 
< p id="player2">< a href="http:
//www.macromedia.com/go/getflashplayer">
Get the Flash Player< /a> to see this player.< /p> 
< script type="text/javascript"> 
var s2 = new SWFObject("player/flvplayer
.swf","playlist","300","312","7");  
s2.addParam("allowfullscreen","true");  
s2.addVariable("file","player/playlist.xml");  
s2.addVariable("displayheight","200");  
s2.addVariable("backcolor","0x000000");  
s2.addVariable("frontcolor","0xCCCCCC");  
s2.addVariable("lightcolor","0x557722");  
s2.addVariable("width","300");  
s2.addVariable("height","312");  
s2.write("player2");  
< /script> 
< /body> 
< /html>

--------------------logout.php-------------------------

< ?php   
unset($_SESSION['user']);   
unset($_SESSION['password']);   
echo "注銷成功";   
?>

以上就是PHP全站權限驗證的具體實現(xiàn)方法。

責任編輯：曹凱來源：百度博客

PHP全站權限驗證