php sso单点登录实现代码

代码如下

复制代码

<?php
//index.php 应用程序页面
header('Content-Type:text/html; charset=utf-8');
$sso_address = 'http://2spaoku.com/sso/login.php'; //你SSO所在的域名
$callback_address = 'http://'.$_SERVER['HTTP_HOST']
.str_replace('index.php','',$_SERVER['SCRIPT_NAME'])
.'callback.php'; //callback地址用于回调设置cookie

if(isset($_COOKIE['sign'])){
exit("欢迎您{$_COOKIE['sign']} <a href="login.php?logout">退出</a>");
}else{
echo '您还未登录 <a href="'.$sso_address.'?callback='.$callback_address.'">点此登录</a>';
}
?>
<iframe src="<?php echo $sso_address ?>?callback=<?php echo $callback_address ?>" frameborder="0" width="0" height="0"></iframe>

<?php
//login.php SSO登录页面
header('Content-Type:text/html; charset=utf-8');
if(isset($_GET['logout'])){
    setcookie('sign','',-300);
    unset($_GET['logout']);
    header('location:index.php');
}

if(isset($_POST['username']) && isset($_POST['password'])){
setcookie('sign',$_POST['username'],0,'');
header("location:".$_POST['callback']."?sign={$_POST['username']}");
}

if(empty($_COOKIE['sign'])){
?>

<?php
}else{
$query = http_build_query($_COOKIE);
echo "系统检测到您已登录 {$_COOKIE['sign']} <a href="{$_GET['callback']}?{$query}">授权</a> <a href="?logout">退出</a>";
}
?>

<?php
//callback.php 回调页面用来设置跨域COOKIE
header('Content-Type:text/html; charset=utf-8');
if(empty($_GET)){
    exit('您还未登录');
}else{
    foreach($_GET as $key=>$val){
        setcookie($key,$val,0,'');
    }
    header("location:index.php");
}
?>

<?php
//connect.php 用来检测登录状态的页面，内嵌在页面的iframe中
header('Content-Type:text/html; charset=utf-8');
if(isset($_COOKIE['sign'])){
    $callback = urldecode($_GET['callback']);unset($_GET['callback']);
    $query = http_build_query($_COOKIE);
    $callback = $callback."?{$query}";
}else{
    exit;
}
?>
<html><script type="text/javascript">top.location.href="<?php echo $callback; ?>";</script></html>

补充：Php教程,Php高级应用