这次给大家带来PHP单点登录功能实现，PHP单点登录功能实现的注意事项有哪些，下面就是实战案例，一起来看一下。
本文实例讲述了PHP实现单点登录功能。分享给大家供大家参考，具体如下：
1.准备两个虚拟域名
127.0.0.1 www.openpoor.com
127.0.0.1 www.myspace.com
2.在openpoor的根目录下创建以下文件
index.PHP
<?php session_start(); ?> <!DOCTYPE html> <html> <head> <meta charset="UTF-8"/> <title>sync login</title> </head> <body> <?php if(empty($_SESSION['username'])):?> hello,游客;请先<a href="login.php" rel="external nofollow" >登录</a><a href="http://www.myspace.com/index.php" rel="external nofollow" rel="external nofollow" >进入空间</a> <?php else: ?> hello,<?php echo $_SESSION['username']; ?>;<a href="http://www.myspace.com/index.php" rel="external nofollow" rel="external nofollow" >进入空间</a> <?php endif; ?> <a href="http://www.openpoor.com/index.php" rel="external nofollow" >home</a> </body> </html>
login.php
<?php
session_start();
if(!empty($_POST['username'])){
require '../Des.php';
$_SESSION['username'] = $_POST['username'];
$redirect = 'http://www.openpoor.com/index.php';
header('Location:http://www.openpoor.com/sync.php?redirect='.urlencode($redirect).'&code='.Des::encrypt($_POST['username'],'openpoor'));exit;
}
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8"/>
<title>sync login</title>
</head>
<body>
<form action="" method="post">
<input type="text" name="username" placeholder="用户名"/>
<input type="text" name="password" placeholder="密码"/>
<input type="submit" value="登录"/>
</form>
</body>
</html>sync.php
<?php
$redirect = empty($_GET['redirect']) ? 'www.openpoor.com' : $_GET['redirect'];
if(empty($_GET['code'])){
header('Loaction:http://'.urldecode($redirect));
exit;
}
$apps = array(
'www.myspace.com/slogin.php'
);
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8"/>
<?php foreach($apps as $v): ?>
<script type="text/javascript" src="http://<?php echo $v.'?code='.$_GET['code'] ?>"></script>
<?php endforeach; ?>
<title>passport</title>
</head>
<body>
<script type="text/javascript">
window.onload=function(){
location.replace('<?php echo $redirect; ?>');
}
</script>
</body>
</html>3.在myspace的根目录下创建如下文件
slogin文件 完成session的设置
<?php
session_start();
header('Content-Type:text/javascript; charset=utf-8');
if(!empty($_GET['code'])){
require '../Des.php';
$username = Des::decrypt($_GET['code'],'openpoor');
if(!empty($username)){
header('P3P: CP="CURa ADMa DEVa PSAo PSDo OUR BUS UNI PUR INT DEM STA PRE COM NAV OTC NOI DSP COR"');
$_SESSION['username'] = $username;
}
}
?>index.php
<?php
session_start();
if(!empty($_SESSION['username']))
{
echo "欢迎来到".$_SESSION['username']."的空间";
}else{
echo "请先登录";
}
?>4.Des.php的文件内容如下
<?php
/**
*@see Yii CSecurityManager;
*/
class Des{
public static function encrypt($data,$key){
$module=mcrypt_module_open('des','', MCRYPT_MODE_CBC,'');
$key=substr(md5($key),0,mcrypt_enc_get_key_size($module));
srand();
$iv=mcrypt_create_iv(mcrypt_enc_get_iv_size($module), MCRYPT_RAND);
mcrypt_generic_init($module,$key,$iv);
$encrypted=$iv.mcrypt_generic($module,$data);
mcrypt_generic_deinit($module);
mcrypt_module_close($module);
return md5($data).'_'.base64_encode($encrypted);
}
public static function decrypt($data,$key){
$_data = explode('_',$data,2);
if(count($_data)<2){
return false;
}
$data = base64_decode($_data[1]);
$module=mcrypt_module_open('des','', MCRYPT_MODE_CBC,'');
$key=substr(md5($key),0,mcrypt_enc_get_key_size($module));
$ivSize=mcrypt_enc_get_iv_size($module);
$iv=substr($data,0,$ivSize);
mcrypt_generic_init($module,$key,$iv);
$decrypted=mdecrypt_generic($module,substr($data,$ivSize,strlen($data)));
mcrypt_generic_deinit($module);
mcrypt_module_close($module);
$decrypted = rtrim($decrypted,"\0");
if($_data[0]!=md5($decrypted)){
return false;
}
return $decrypted;
}
}
?>当在openpoor登录后将session信息传到其他域名下的文件下进行处理，以script标签包含的形式进行运行。
5.此时访问www.openpoor.com和www.myspace.com都是未登录状态
登录后两个域名下都是登录状态
到此我们实现了一个简单的单点登录。
相信看了本文案例你已经掌握了方法，更多精彩请关注php中文网其它相关文章！
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