[Adding to an array with a function]

Hi im having some trouble when i try to add values to an array from a function. The added value will not stay saved.

fun1 will display both firstname and surname but when i call fun2 after calling fun1 i just get the firstname.

 

I would like to have it so the array is updated and stays updated untill it is cleared or over written.

 

Any help with this would be greatly appreciated. i am using codeigniter if that makes any difference.

 

Thanks

 

 

 

<?php

 

class Test extends Controller

{

    var $data1 = array(

    'firstname' => 'craig'

    );

 

    function fun1()

    {

        global $data1;

        $this->data1['surname'] = 'brute';

        echo "<pre>";

        print_r($this->data1);

    }

 

    function fun2()

    {

        global $data1;

        echo "<pre>";

        print_r($this->data1);

    }

 

}