PHP Objects, Patterns and Practice (3rd edition)

CHAPTER 3 ■ OBJECT BASICS

private $discount = 0;

public function __construct( $title, $firstName,
$mainName, $price ) {
$this->title = $title;
$this->producerFirstName = $firstName;
$this->producerMainName = $mainName;
$this->price = $price;
}

public function getProducerFirstName() {
return $this->producerFirstName;
}

public function getProducerMainName() {
return $this->producerMainName;
}

public function setDiscount( $num ) {
$this->discount=$num;
}

public function getDiscount() {
return $this->discount;
}

public function getTitle() {
return $this->title;
}

public function getPrice() {
return ($this->price - $this->discount);
}

public function getProducer() {
return "{$this->producerFirstName}".
" {$this->producerMainName}";
}

public function getSummaryLine() {
$base = "{$this->title} ( {$this->producerMainName}, ";
$base .= "{$this->producerFirstName} )";
return $base;
}
}

class CdProduct extends ShopProduct {
private $playLength = 0;

public function construct( $title, $firstName,
$mainName, $price, $playLength ) {
parent::construct( $title, $firstName,
$mainName, $price );