How to remove some session array segment after click button in codeigniter

Try this, hope it'll help

if($deleted_plan){    foreach($final_session as $k => $session)    {         if(isset($session[$deleted_plan]))         {            unset($final_session[$k][$deleted_plan]);         }    }    $final_session = array_values($final_session);    $this->session->set_userdata('payment_plans', $final_session);}

You can refer below example :

Lets take an array and set in session like

$array_one = array(0=>'plan1',1=>'plan2',2=>'plan3');$this->session->set_userdata('payment_plans', $array_one);

Now to unset specific element, First get session into a variable like here $arra

$arra = $this->session->userdata('payment_plans');

Unset specific array element you want to unset like if you want to remove 'plan1'

unset($arra[0]); //0 is key of plan1

Set result array into session again

$this->session->set_userdata('payment_plans', $arra);$arra = $this->session->userdata('payment_plans');                print_r($arra);

OR

You can directly unset session element using

$array_one = array(0=>'plan1',1=>'plan2',2=>'plan3');$this->session->set_userdata('payment_plans', $array_one); //set sessionunset($_SESSION['payment_plans'][0]); //unset specific element. 0 is key of session array$arra = $this->session->userdata('payment_plans');  // get session array              print_r($arra); // display session array