SESSION empty after function execution

I started developing a platform mainly in php and sessions worked fine, until I stopped my Apache Server and started working on it a week later.

This is my problem :

index.php

<?php
    include_once 'backend/login.php';   // DB connect + functions           
    include_once 'menu.php';            // menu include
    check_logout();                     // check if user logged out
?>      
<?php
    include_once 'widgets/widgets.php'; // widgets : login, agenda, events, languages
    include_once 'footer.php';          // footer
?>

So basically these are the php parts of my page (the rest is HTML). backend/login includes login functions (and that file itself includes login to the DB followed by session_start()).

home.php

<?php
        include_once 'backend/login.php';           // connect to DB, login functions
        include_once 'backend/load_feed.php';       // feed functions           
        include_once 'menu.php';                    // include main menu
        ?>
        <script>
            alert("<?php echo $_SESSION['first_name']; ?>");
        </script>
        <?php           
        check_login();                              // ensure user is logged in
    ?>

When the login on index.php (form is hidden in widgets/widgets.php) is valid. It changes the window.location to home.php. The problem is that $_SESSION doesn't contain the information stored during the login.

dbconnect.php

<?php
/*
remote script used to conenct to the database
*/
$servername = "localhost";
$username = "root";
$password = "root";
$dbname = "DB";

// create connection
$conn = new mysqli($servername, $username, $password, $dbname);

// check connection
if($conn->connect_error){
    die("Connection failed : " . $conn->connect_error);
}
session_start();
?>

This is the script used to connect to the database, it functions properly (I am able to verify the validity of the user credentials)

Complementary Info :
- I have verified that all info stored is stored in $_SESSION when logging in. (information is present in the scope of the function).
- All files needing $_SESSION do include (directly or trough other includes) the dbconnect.php file, hence giving access to $_SESSION.
- No output is generated before calling session_start();

Does someone have any idea of what might be the source of my problem ?

---

<?php
    session_start();
    include_once 'backend/login.php';
    include_once 'menu.php';
    check_logout();
    include_once 'widgets/widgets.php';
    include_once 'footer.php'
?>

Try This!

I Hope This works & also do one thing, the list of files you have included above please make sure that you haven't called session_start() again in that files also, actually it doesn't matter but still give a try.

Also as you are saying that the function is giving problem, please also post the snapshot of the error so that it would me more helpful to understand the error.

---

我想你应该先根据这个调用session_start（），但我不太确定

---

你需要在home.php开头调用session_start()函数home.php试。

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