Error when retrieving session_id() after redirecting to another page
Extremely noob question.
I want to develop a login form in PHP using the Post/Redirect/Get pattern. The page containing the login form is something like this:
<?php
开发者_开发问答if (try_login()) {
session_regenerate_id();
session_start();
header('Location: main.php');
exit();
}
?>
<html>
<head>
<!-- etc, etc -->
</head>
<body>
<form action="<?php echo htmlentities($_SESSION['PHP_SELF']); ?>" method="post">
<!-- etc, etc--></head>
</form>
</body>
</html>
For debugging purposes, main.php only contains
<?php
echo htmlentities(session_id());
?>
I expect to be taken to main.php and shown my session_id() after logging in successfully. However, when I test the login form myself, I am redirected to main.php, but my session_id() doesn't appear. What's wrong with my code?
You need to call session_start() in main.php before you can retrieve the session.
加载中,请稍侯......
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