<?PHP
 session_start();

 $_SESSION['name'] = 'Arfan';

 $_SESSION['second_name'] = 'Haider';

echo 'My full name is '.$_SESSION['name'].$_SESSION['second_name'].'<br/>';

unset($_SESSION['second_name']);// unset the second_name session

echo 'My name is '.$_SESSION['name'].$_SESSION['second_name'].'<br/>';// work fine error popup

session_destroy();// Destroy all the session

echo $_SESSION['name']; // session is working here.
?>

正如您在代码会话结束时所看到的那样,为什么呢？