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Undefined index: user_id. Where, user_id is the session variable

I am trying to register a user. After user registration, a direct login to the system occurs. So basically I want to start a session after registering immediately.

But I cannot do this because the session variable is not set! This gives me a headache :(

Please help me..

Here's the insert code in the users table:

// Add register user 
if(isset($_POST["register_btn"]))
 {
    extract(array_map("test_input", $_POST));
    $md5pass=md5($password);

    $m->set_data('full_name',$full_name);
    $m->set_data('gender',$gender);
    $m->set_data('email',$email); 
    $m->set_data('mobile',$mobile);
    $m->set_data('password',$md5pass);
    $m->set_data('created_date',$date);
    $m->set_data('updated_date',$date);

    $a1= array ('role_id'=> 2,
                'full_name'=> $m->get_data('full_name'),
                'gender'=> $m->get_data('gender'),
                'email'=> $m->get_data('email'),
                'mobile'=> $m->get_data('mobile'),
                'password'=> $m->get_data('password'),
                'created_date' => $m->get_data('created_date'),
                'updated_date' => $m->get_data('updated_date'));

    $last_auto_id=$d->last_auto_id("users");
    $res=mysqli_fetch_array($last_auto_id);
    $user_id=$res['Auto_increment'];

    // inserting into users table
    $insert=$d->insert('users',$a1);

    if($insert>0)
    {
        // I am starting session here
        $_SESSION['user_id']=$user_id;
        header("location:account.php?msg=Your account has been created.");
    }
    else {
        header("location:account.php?msg=Error.");
    }
 }

Now, if I try to print $ _SESSION ['user_id'] in the code below:

<?php
    extract(array_map("test_input", $_GET));
    if(isset($msg)) {
        echo $msg . "<br/>";
        echo "Welcome, ".$_SESSION['user_id'] ;
    }
?>

He gives me the conclusion:

Your account has been created.

Note: Undefined index: user_id in C: \ xampp \ htdocs \ maxosale_client \ account.php on line 30 Welcome,

I wrote session_start () in the header and is included in this code above so that there is no problem.

So here is my problem, please help me.

+4
3

. , users.

session_start();

.

:

session_start();
// Add register user 
if(isset($_POST["register_btn"]))
{
extract(array_map("test_input", $_POST));
$md5pass=md5($password);

$m->set_data('full_name',$full_name);
$m->set_data('gender',$gender);
$m->set_data('email',$email); 
$m->set_data('mobile',$mobile);
$m->set_data('password',$md5pass);
$m->set_data('created_date',$date);
$m->set_data('updated_date',$date);

$a1= array ('role_id'=> 2,
            'full_name'=> $m->get_data('full_name'),
            'gender'=> $m->get_data('gender'),
            'email'=> $m->get_data('email'),
            'mobile'=> $m->get_data('mobile'),
            'password'=> $m->get_data('password'),
            'created_date' => $m->get_data('created_date'),
            'updated_date' => $m->get_data('updated_date'));

$last_auto_id=$d->last_auto_id("users");
$res=mysqli_fetch_array($last_auto_id);
$user_id=$res['Auto_increment'];

// inserting into users table
$insert=$d->insert('users',$a1);

if($insert>0)
{
    // I am starting session here
    $_SESSION['user_id']=$user_id;
    header("location:account.php?msg=Your account has been created.");
}
else {
    header("location:account.php?msg=Error.");
}
}
0

$_SESSION['user_id'] ? , :

extract(array_map("test_input", $_GET));
if(isset($msg)) {
    echo $msg . "<br/>";
    $user_id = isset($_SESSION['user_id']) ? trim($_SESSION['user_id']) : '';
    echo "Welcome, " . $user_id ;
}

$_SESSION['user_id'], . // php error_reporting php.ini.

0

$_SESSION, session_start().

<?php
    session_start();

    extract(array_map("test_input", $_GET));
    if(isset($msg)) {
        echo $msg . "<br/>";
        echo "Welcome, ".$_SESSION['user_id'] ;
    }
?>
-1
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