Use this keyword to reference interal properties
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<?php
class Employee {
public $numPages;
public $stayYear;
public $title;
public $lastName;
public $firstName;
public $price;
function __construct( $title, $firstName,
$mainName, $price,
$numPages=0, $stayYear=0 ) {
$this->title = $title;
$this->firstName = $firstName;
$this->lastName = $mainName;
$this->price = $price;
$this->numPages = $numPages;
$this->stayYear = $stayYear;
}
function getNumberOfPages() {
return $this->numPages;
}
function getStayLength() {
return $this->stayYear;
}
function getFullName() {
return "{$this->firstName}" . "{$this->lastName}";
}
}
$product1 = new Employee("A", "A1", "A2", 5.99, 300 );
$product2 = new Employee("B", "B1", "B2", 10.99, null, 60.33 );
print "author: ".$product1->getFullName()."n";
print "number of pages: ".$product1->getNumberOfPages()."n";
print "artist: ".$product2->getFullName()."n";
print "play length: ".$product2->getStayLength()."n";
?>
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