FIle_2_karTetap.php

<?php
include('Karyawan.php');
class karTetap extends Karyawan
{
public $golongan;
public $tunjangan;
public $totalgaji;

public function construct()
{
    parent::__construct(); //panggil induk
    $this->golongan;
    $this->tunjangan;
    $this->totalgaji;
}

  public function setGol($gol)
  {
    if($gol=="IA")
     {$gapok=3000000;}
    if($gol=="IIA")
     {$gapok=2500000;}
    if($gol=="IIB")
     {$gapok=2000000;}
    if($gol=="")
     {$gapok=0;}
    $this->golongan=$gol;
    $this->gapok=$gapok;
  }
    public function getGol()
    {
        return $this->golongan;
    }
  public function setTunjangan($tunj)
  {
    if($tunj=="")
     {$tunj=0;}
    $this->tunjangan=$tunj;
  }
    public function getTunjangan()
    {
        return $this->tunjangan;
    }
  public function setGapok($gapok)
  {
    $this->gapok=$gapok;
  }
    public function getGapok()
    {
        return $this->gapok;
    }
  public function hitungGaji()
  {
    $this->totalgaji = $this->gapok + $this->tunjangan;
    return $this->totalgaji;
  }
}
?>