PHP Notice: Undefined index Error with Session

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PHP: Notice: Undefined index where the session variable is defined
PHP: “Notice: Undefined variable” and “Notice: Undefined index”

Ok, so this is the Error:

Notice: Undefined index: overview_id in C:\xampp\htdocs\site\home.php on line 6

And this is my code:

 <?php session_start();

   $sess = $_SESSION["overview_id"];

   if(isset($sess)){
     header("Location: account.php");
   }

 ?>

Any help would be cool.

Thank you.

$_SESSION["overview_id"] is not defined. just like the error message said — , Nov 05 '12 at 23:31
This isn't an error, its a *Notice*, it's just informing you of some nice-to-dos — Mitch Dempsey, Nov 05 '12 at 23:32
I don't get it: if you check whether that `overview_id` element is defined (and you DO check it, with `isset`), why do you create a temporary variable, assign this value to it and only then check this variable? Why don't just `if(isset($_SESSION['overview_id']))` then? I mean, what's the reasoning behind this logic? — raina77ow, Nov 05 '12 at 23:36

score 0 · Answer 1 · answered Nov 05 '12 at 23:34

0

Just change your third line to

if (isset($_SESSION['overview_id'])){

Instead and remove the second line.

answered Nov 05 '12 at 23:34

jtheman

7,421
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score 0 · Answer 2 · answered Nov 05 '12 at 23:34

0

you set up session_id before checking, so it always must have at least default value assigned before You set up it to another variable, so better use this

if(isset($_SESSION["overview_id"])){
    header("Location: account.php");
}

answered Nov 05 '12 at 23:34

DTukans

339
2
7

score 0 · Answer 3 · answered Nov 05 '12 at 23:35

0

In terms of the code that you have presented:

<?php 
session_start();

if(isset($_SESSION["overview_id"])){
    header("Location: account.php");
}

?>

This would resolve the issue

answered Nov 05 '12 at 23:35

cEz

4,932
1
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score 0 · Answer 4 · answered Nov 05 '12 at 23:37

0

since $_SESSION["overview_id"] is not set, then $sess = $_SESSION["overview_id"]; will fail. This is how you have to do your test:

<?php session_start();

    if (isset($_SESSION["overview_id"])) {
        header("Location: account.php");
    }
?>

answered Nov 05 '12 at 23:37

Greeso

7,544
9
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PHP Notice: Undefined index Error with Session

4 Answers4