La classe CI implémente l'utilisation de base de la session

//生成一个随机不重复的字符串走位加密的key保存到config.php的encryption_key中
$config['encryption_key']='bf363d0a';

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

$array = array('id'=>1,'name'=>'niu');
$this->session->set_userdata($array);

$this->session->userdata(session名);

$this->session->unset_userdata('SESSION名');

//生成一个随机不重复的字符串走位加密的key保存到config.php的encryption_key中
$config['encryption_key']='bf363d0a';

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

$array = array('id'=>1,'name'=>'niu');
$this->session->set_userdata($array);

$this->session->userdata(session名);

$this->session->unset_userdata('SESSION名');