PHP session::clr方法代碼示例

 static function clr($key)
 {
     $a = func_get_args();
     if (is_array($key)) {
         foreach ($key as $k) {
             session::clr($k);
         }
     } elseif (count($a) > 1) {
         foreach ($a as $k) {
             session::clr($k);
         }
     } else {
         if (isset($_SESSION[$key])) {
             unset($_SESSION[$key]);
         }
     }
 }

 /**
  * @brief Suid to another user.
  * 
  * The aim of this function is to allow the user to become another user,
  * for testing or administrative purposes. It is similar to the sudo and
  * su commands in the *nix world.
  * 
  * A user can only suid ONCE, and is only allowed to switch back to the
  * previous (original) user by passing NULL as the user record.
  * 
  * @todo Thorougly test
  * @param UserRecord $user The user to suid to or null to revert
  * @return boolean True on success
  */
 static function suid(UserRecord $user = null)
 {
     $suid = (array) session::get(User::KEY_USER_SUID, null);
     if (arr::hasKey($suid, 'issuid') && $user == null) {
         // Can unsuid
         $uid = $suid['uid'];
         session::set(User::KEY_USER_AUTH, $uid);
         session::clr(User::KEY_USER_SUID);
         // user::set
         return true;
     } elseif ($user) {
         // Can suid
         session::set(User::KEY_USER_SUID, array('issuid' => true, 'uid' => user::getActiveUser()->userid, 'suid' => $user->userid));
         session::set(User::KEY_USER_AUTH, $user->userid);
         return true;
     } else {
         throw new SecurityException("Invalid suid attempt");
     }
 }

 static function initialize()
 {
     self::$cookies = $_COOKIE;
     if (class_exists('session')) {
         // Grab the cookie jar and set cookies as needed
         self::$jar = (array) session::get('__cookiejar');
         // Add the cookies from the jar to the cookies collection so
         // we can access them.
         foreach (self::$jar as $cookie) {
             self::$cookies[$cookie[0]] = $cookie[1];
         }
         if (!headers_sent()) {
             foreach (self::$jar as $cookie) {
                 call_user_func_array('setcookie', $cookie);
                 session::clr('__cookiejar');
             }
             // Then empty the jar
             self::$jar = array();
             session::clr('__cookiejar');
         } else {
             throw new BaseException("Cookie jar for delayed cookies loaded but output already started");
         }
     }
 }

 /**
  * @brief Delete the current viewstate.
  *
  * The data will remain in place in the object, so save() can be called
  * again to create a new state.
  */
 function delete()
 {
     if ($this->stateid != null) {
         session::clr('viewstate_' . $this->stateid);
         $this->stateid = null;
     } else {
         throw new BaseException("Can't delete a non-saved viewstate");
     }
 }