Codeigniter redirect（）不会在某些系统上重定向

Question

I do have a CI project in which's home function I check, if a cookie already exists. If so, the user should be redirected. This works fine for example on my linux machine (Chrome), but not on my Mac (Chrome) - and I have no clue why.

This is the code:

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

        if(array_key_exists('id', $session)) {
            redirect(site_url("loggedin"), "refresh");
        } else {
            /* set cookie */

Thanks

Answer 1

First, I'm not sure if array_key_exists() is better or if isset($_SESSION['id']) is, but either way CI has this built in with the session->userdata() function, which returns FALSE if the value isn't set:

if($this->session->userdata('session_id'))
    redirect('loggedin',"refresh");

//rest of code

Also notice that you don't need site_url() in the redirect() function. CI will do that by default. I'm not sure if any of that has to do with your issue, though. It could be a browser bug. Does redirect('loggedin'); (which would use a location redirect) work?