1,新建 CasClient.php
<?php
include_once (dirname ( __FILE__ ) . '/CasClientConfig.php'); // 注意这个
include_once (dirname ( __FILE__ ) . '/CAS.php'); // 注意这个
// 初始化
phpCAS::setDebug ();
// initialize phpCAS
phpCAS::client ( CAS_VERSION_2_0, CAS_SERVER_HOSTNAME, CAS_SERVER_PORT, CAS_SERVER_APP_NAME );
// no SSL validation for the CAS server
phpCAS::setNoCasServerValidation ();