Bài 4 trình bày về lập trình hướng đối tượng "object oriented programming". Nội dung chính trong chương này gồm có: Class, visibility, properties & methods, Getter & getter, create objects, constructor, destructor, inheritance, abstract class, interfaces, autoloading classes, anonymous functions, closures, namespace. . | Bài giảng Phát triển phần mềm nguồn mở: Bài 4 - Nguyễn Hữu Thể PHÁT TRIỂN PHẦN MỀM NGUỒN MỞ OBJECT ORIENTED PROGRAMMING Nguyễn Hữu Thể Content 1. Class 2. Visibility 3. Properties & Methods 4. Getter & Setter 5. Create objects 6. Constructor 7. Destructor 8. Inheritance 9. Abstract class 10. Interfaces 11. Autoloading classes 12. Anonymous functions 13. Closures 14. Namespace 2 Class class ClassName { // Properties // Methods } 3 Visibility (public, private, protected) Three levels: • public • private • protected By default, all class members are public. 4 Properties & Methods class Person { private $name; //public, protected private $age; public function show(){ echo $this->name . " is " . $this->age . " years old!"; } } 5 Create objects (Create a new instance of the class) Using the new keyword: new ClassName() For example: $person = new PerSon(); $person2 = new PerSon(); 6 Getter & Setter PHP JAVA class Person class Person { { private $name; private String name; private $age; private int age; public function getName(){ public String getName(){ return $this->name; return name; } } public function setName($name){ public void setName(String name){ $this->name = $name; = name; } } public function getAge(){ public int getAge(){ return $this->age; return age; } } public function setAge($age){ public void setAge(int age){ $this->age = $age; = age; } } } } 7 class Person{ Ex: private $name; private $age; public function getName(){ return $this->name; } public function setName($name){ $this->name = $name; } public function getAge(){ return $this->age; } public function setAge($age){ $this->age = $age; } public function show(){ echo $this->name . " is " . $this->age . " years old!"; } $p = new Person(); } .
