Define and use constructor : Constructor « Class « PHP

Define and use constructor

   class book {
      private $title;
      private $isbn;
      private $copies;

      public function __construct($isbn) {

      public function setIsbn($isbn) {
         $this->isbn = $isbn;

      public function getTitle() {
         $this->title = "title";
         print "Title: " . $this->title . "<br />";

      public function getNumberCopies() 
         $this->copies = "5";
         print "Number copies available: " . $this->copies."<br />";

   $book = new book("1111");



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