thinkphp如何实现单点登录

<?php   // The purpose of this central config file is configuring all examples // in one place with minimal work for your working environment // Just configure all the items in this config according to your environment // and rename the file to config.php   $phpcas_path = &#39;phpCAS/&#39;;   /////////////////////////////////////// // Basic Config of the phpCAS client // /////////////////////////////////////// $client_domain = &#39;localhost&#39;; // 客户端 domain  $client_path = &#39;afschool&#39;; $client_secure = false; $client_httpOnly = true; $client_lifetime = 0;   // Full Hostname of your CAS Server 服务器主机 $cas_host = &#39;cas.example.com&#39;;   // Context of the CAS Server   $cas_context = &#39;/cas&#39;;   // Port of your CAS server. Normally for a https server it&#39;s 443 $cas_port = 443;   // Path to the ca chain that issued the cas server certificate $cas_server_ca_cert_path = &#39;/path/to/cachain.pem&#39;;   ////////////////////////////////////////// // Advanced Config for special purposes // //////////////////////////////////////////   // The "real" hosts of clustered cas server that send SAML logout messages // Assumes the cas server is load balanced across multiple hosts $cas_real_hosts = array ( &#39;cas-real-1.example.com&#39;, &#39;cas-real-2.example.com&#39; );   // Database config for PGT Storage $db = &#39;pgsql:host=localhost;dbname=phpcas&#39;; //$db = &#39;mysql:host=localhost;dbname=phpcas&#39;; $db_user = &#39;phpcasuser&#39;; $db_password = &#39;mysupersecretpass&#39;; $db_table = &#39;phpcastabel&#39;;   /////////////////////////////////////////// // End Configuration -- Don&#39;t edit below // ///////////////////////////////////////////   // Generating the URLS for the local cas example services for proxy testing if ( isset($_SERVER[&#39;HTTPS&#39;]) && $_SERVER[&#39;HTTPS&#39;] == &#39;on&#39;){ $curbase = &#39;https://&#39;.$_SERVER[&#39;SERVER_NAME&#39;]; }else{ $curbase = &#39;http://&#39;.$_SERVER[&#39;SERVER_NAME&#39;]; } if ($_SERVER[&#39;SERVER_PORT&#39;] != 80 && $_SERVER[&#39;SERVER_PORT&#39;] != 443) $curbase .= &#39;:&#39;.$_SERVER[&#39;SERVER_PORT&#39;];   $curdir = dirname($_SERVER[&#39;REQUEST_URI&#39;])."/";     // CAS client nodes for rebroadcasting pgtIou/pgtId and logoutRequest $rebroadcast_node_1 = &#39;http://cas-client-1.example.com&#39;; $rebroadcast_node_2 = &#39;http://cas-client-2.example.com&#39;;   // access to a single service $serviceUrl = $curbase.$curdir.&#39;example_service.php&#39;; // access to a second service $serviceUrl2 = $curbase.$curdir.&#39;example_service_that_proxies.php&#39;;   $pgtBase = preg_quote(preg_replace(&#39;/^http:/&#39;, &#39;https:&#39;, $curbase.$curdir),&#39;/&#39;); $pgtUrlRegexp = &#39;/^&#39;.$pgtBase.&#39;.*$/&#39;;   $cas_url = &#39;https://&#39;.$cas_host; if ($cas_port != &#39;443&#39;) { $cas_url = $cas_url.&#39;:&#39;.$cas_port; } $cas_url = $cas_url.$cas_context;     // Set the session-name to be unique to the current script so that the client script // doesn&#39;t share its session with a proxied script. // This is just useful when running the example code, but not normally. session_name(&#39;session_for:&#39;.preg_replace(&#39;/[^a-z0-9-]/i&#39;, &#39;_&#39;, basename($_SERVER[&#39;SCRIPT_NAME&#39;]))); ?>

<?php namespace appindexcontroller; use thinkDb; use thinkLoader;   class Index extends thinkController {     public function login()     { // Example for a simple client         // Load the settings from the central config file         require &#39;./extend/config.php&#39;;         // Loader::import(&#39;config.php&#39;,EXTEND_PATH);         // Load the CAS lib         //直接引入phpCAS扩展库下的类文件phpCAS.php         Loader::import(&#39;phpCASphpCAS&#39;,EXTEND_PATH);                 //直接引入库文件需要实例化类         $phpCAS = new phpCAS();         // Uncomment to enable debugging         $phpCAS->setDebug();                  // Initialize phpCAS         $phpCAS-&gt;client(CAS_VERSION_2_0, $cas_host, $cas_port, $cas_context);           // For quick testing you can disable SSL validation of the CAS server.          // THIS SETTING IS NOT RECOMMENDED FOR PRODUCTION.          // VALIDATING THE CAS SERVER IS CRUCIAL TO THE SECURITY OF THE CAS PROTOCOL!          $phpCAS-&gt;setNoCasServerValidation();           //这里会检测服务器端的退出的通知，就能实现php和其他语言平台间同步登出了         $phpCAS-&gt;handleLogoutRequests();           //访问CAS的验证通过后，跳转到网页         if($phpCAS-&gt;forceAuthentication()){            echo "<script>parent.location.href=&#39;http://www.baidu.com&#39;;</script>";           };               } }