无法在codeigniter中更改会话值[重复]

Question

This question already has an answer here:

• Codeigniter modifying session data 3 answers

I use the session in codeigniter, it works well but I can't change the value. I use this function :

$this->session->set_userdata('check', 0);

I must change the value of 'check' to 0.

Why can't ?

My question is, why i can't change the value session ? And I set the value like this for the first time :

$sess_array = array(
        'userid' => $row->userid,
        'pseudo' => $row->pseudo,
        'check'  => $row->check
);  
$this->session->set_userdata('logged_in', $sess_array);

</div>

Answer 1

$sess_array = array(
    'userid' => $row->userid,
    'pseudo' => $row->pseudo,
    'check'  => $row->check
); 
// you have set session key 'logged_in' 
$this->session->set_userdata('logged_in', $sess_array);

// Get session value from existing key
$arrSession = $this->session->userdata('logged_in');
$arrSession['check'] = 0;
$this->session->set_userdata('logged_in', $arrSession);

You need to update value as shown above.

If you wish to set 'check' value as you indicated. you need to do as following

$sess_array = array(
    'userid' => $row->userid,
    'pseudo' => $row->pseudo,
    'check'  => $row->check
); 
// Note that no key specified. 
$this->session->set_userdata($sess_array);
// Now i think you can set check value. Give it a try. Let me know which works.
$this->session->set_userdata('check',0);