php - Separate base class(template) and derive classes (data).? -

general

  require('fpdf.php');    $pdf=new fpdf();   $pdf->addpage();   $pdf->setfont('arial','b',16);   $pdf->cell(40,10,'hello world!');   $pdf->output(); 

i want separate 2 class (base , child(child data) )

base class (present template of output )

require('fpdf.php'); class base{   //todo   function def(){     $pdf=new fpdf();     $pdf->addpage();     // page header in here       // ->do in derived class(leave derived data )    // page footer  in here     $pdf->output();    } } 

child class (manipulate data )

  class child extends base{       //todo       function def(){        $pdf->cell(40,10,'hello world!');     }     } 

when call use child class out pdf file

$obj_pdf = new child(); $obj_pdf->def(); 

how should implement it? or not possible this?

what want accomplish here wrapper pattern. don't know if right solution problem. inheritance meant add complexity in child classes, not extending functions in parent.

but wrapper try like:

class base{   //todo   function def(){     require('fpdf.php');     $pdf=new fpdf();     $pdf->addpage();      // page header in here      // ->do in derived class(leave derived data )     $child = new child();     $pdf = $child->def($pdf);      // page footer  in here     $pdf->output();   } } 

call with:

$obj_pdf = new base(); $obj_pdf->def();