var $rooms = 3; var $size = 100; function housepro() { $house_p = "Rooms: " . $this->rooms; $house_p .= "<br>"; $house_p .= "Size: " . $this->size; return $house_p; } } class smallHouse extends house { } $house = new house(); $house->rooms = 7; $house->size = 400; $var = $house->housepro(); echo $var; echo "<br>"; // the second class $house = new smallHouse(); $house->rooms; $house->size; $var = $house->housepro(); echo $var; ?> </body> </html>