How to set session in Codeigniter after login?

@darrion.kuhn 

In Codeigniter, you can use the $this->session->set_userdata() method to set session data after a user logs in. Here's an example of how you can use it:

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// Load the session library
$this->load->library('session');

// Set session data
$newdata = array(
   'username'  => 'johndoe',
   'email'     => 'johndoe@example.com',
   'logged_in' => TRUE
);

$this->session->set_userdata($newdata);

This will create a new session with the given data. You can then use the $this->session->userdata('key') method to retrieve the value of a particular session variable. For example, to retrieve the username, you can use $this->session->userdata('username').

You can also use the $this->session->set_flashdata() method to set temporary session data that will be available only for the next server request, and will be automatically deleted afterwards.

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$this->session->set_flashdata('message', 'You have successfully logged in');

This can be useful for displaying success or error messages to the user after a form submission. You can retrieve flash data using the $this->session->flashdata('key') method.

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echo $this->session->flashdata('message');

@darrion.kuhn 

To set a session in CodeIgniter after login, you can follow these steps:

1. First, load the session library in your controller by adding the following line of code in your controller's constructor or in the function where you want to set the session:

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

1. After loading the session library, you can set the session data in a variable. For example, if you have a user object with the user details after a successful login, you can set the session like this:

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$user_data = array(
    'user_id' => $user->id,
    'username' => $user->username,
    // Add more data as needed
);

$this->session->set_userdata($user_data);

1. Once the session data is set, you can access it anywhere in your application by using $this->session->userdata('key'). For example, to access the user_id in another controller or view, you can do the following:

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$user_id = $this->session->userdata('user_id');

1. Optionally, you can also destroy the session when the user logs out by using:

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$this->session->sess_destroy();

Remember to keep the session library loaded throughout your application so that you can access and utilize the session data.