How to push array of array in codeigniter?

Question

I am declare my array as public

class Doctor extends CI_Controller {

    public $prescription_drug = array();

.....

}

I need array like following

Array
(
        [0] => Array
        (
            [drugdoze] => 8
            [drugname] => 80
            [drugsize] => 5
            [drugtype] => 1
            [duration] => 
            [rx_duration] => 2
            [rx_instruction] => 3
            [rx_special_note] => “test 1”
        )
    [1] => Array
        (
            [drugdoze] => 4
            [drugname] => 10
            [drugsize] => 5
            [drugtype] => 3
            [duration] => 1
            [rx_duration] => 2
            [rx_instruction] => 3
            [rx_special_note] => “test 2”
        )
    [2] => Array
        (
            [drugdoze] => 1
            [drugname] => 13
            [drugsize] => 5
            [drugtype] => 3
            [duration] => 1
            [rx_duration] => 2
            [rx_instruction] => 3
            [rx_special_note] => “test 3”
        )

)


How can I append following array with
[3] => Array
        (
            [drugdoze] => 1
            [drugname] => 13
            [drugsize] => 5
            [drugtype] => 3
            [duration] => 1
            [rx_duration] => 2
            [rx_instruction] => 3
            [rx_special_note] => “test 3”
        )

I have a public function

public function prescription_selected_drug_session()
    {

    $prescription_data= array(
                'drugdoze' => $this->input->post("drugdoze"),
                'drugname'=> $this->input->post("drugname"),
                'drugsize' => $this->input->post("drugsize"),
                'drugtype' =>$this->input->post("drugtype"),
                'duration'=> $this->input->post("duration"),
                'rx_duration' => $this->input->post("rx_duration"),
                'rx_instruction'=>$this->input->post("rx_instruction"),
                'rx_special_note' => $this->input->post("rx_special_note")
                );


    array_push($this->prescription_drug,$prescription_data);

}

I call the function using ajax. But the value of $this->prescription_drug is overwriten every times not appended.

Can anyone help me?

Answer 1

Php is stateless. Every ajax request creates a new instance of Doctor.

You will need to persist the data in session or database, or aggregate client side