How to generate token in Codeigniter?

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<?php
// In your controller

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

// Generate the token
$token_name = $this->security->get_csrf_token_name();
$hash = $this->security->get_csrf_hash();

// Store the token and hash in an array
$data['csrf'] = array(
    'name' => $token_name,
    'hash' => $hash
);

// Load the view and pass the token and hash
$this->load->view('form_view', $data);

?>

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<form method="post">
    <!-- Other form fields here -->

    <!-- Add the CSRF token and hash as hidden fields -->
    <input type="hidden" name="<?php echo $csrf['name']; ?>" value="<?php echo $csrf['hash']; ?>" />

    <input type="submit" value="Submit" />
</form>