Undefined variable: _SESSION in codeigniter

Question

I upgrade my codeigniter version from 2.1.0 to 2.1.3 from cpanel installatron. Also I integrated tank auth library with codeigniter. I started session_start() in index.php file.

Now I am getting Undefined variable: _SESSION error.

How do I solve this ?

Abhijit Borade · Accepted Answer · 2016-05-18 10:42:27Z

2

In Codeigniter 2.X and earlier you cannot use $_SESSION directly before starting session manually.

Instead you can retrieve all session data in a variable and use it like your $_SESSION variable. You can do it as bellow:

$my_session_variable = $this->session->all_userdata();

Here our own variable $my_session_variable will become a copy of $_SESSION.

answered May 18, 2016 at 10:42

Abhijit Borade

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Comments

Allan Andrade · Accepted Answer · 2016-06-12 13:15:55Z

1

Maybe you haven't initiliazed the session library?

Try to:

$this->load->library('session');

That happens to me sometimes.

edited Jun 12, 2016 at 13:15

Allan Andrade

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answered Feb 2, 2013 at 11:03

Victor Lava

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1 Comment

Silvio Delgado Over a year ago

@Neel tell us what was the issue!

aya · Accepted Answer · 2013-02-02 09:45:31Z

1

check your file that your file is not utf-8 or if you need utf-8 use utf-8 without BOM.
i hope this help you.

answered Feb 2, 2013 at 9:45

aya

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2 Comments

aya Over a year ago

Is your OS windows. if you have windows , you can open file with notepad.exe and when save as file prompted save asci or utf-8.

Neel Over a year ago

Thanks aya, but not getting solution.

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