Why $CI =& get_instance(); in each function

Why $CI =& get_instance(); in each function - Printable Version

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Why $CI =& get_instance(); in each function - El Forum - 11-08-2011

[eluser]TerryT[/eluser]
I have a library where I call this in the constructor:

Code:
class Mypdf extends TCPDF 

function __construct()    {

  parent::__construct();  

    $CI =& get_instance();

    $CI->load->library('session');

    $CI->load->library('pdf');

I also have these methods:

Code:
public function newpdf($title, $subject, $report_name)

public function body_project_listing()

To access sessions in either of the functions, I have to call:

Code:
$CI =& get_instance();

    $CI->load->library('session');

    $CI->load->library('pdf');

[/code]

in each function. Can anyone let me know why I can't just call it in the parent::__construct()? Thanks.