PHP Object-oriented Programming OOP inheritance usage Introduction example

In this paper, we describe the OOP inheritance usage of PHP object-oriented programming. Share to everyone for your reference, as follows:

<?phpclass person {  var $name;//protected  var $sex;  var $age;  function __construct ($name = "", $sex = "male", $age =) {    $this->name = $name;    $this->sex = $sex;    $this->age = $age;  }  function say () {    echo $this->name. "in Speech <br/>";  }  function run () {    echo "walking <br/>";  }} Class Student extends Person {  var $school;  function __construct ($name = "", $sex = "male", $age =, $school = "") {    parent::__construct ($name, $sex, $age);    $this->school = $school;  }  Function study () {    echo $this->name. " Being ". $this->school." Learning <br/> ";  }} Class Teacher extends Student {  var $wage;  function Teaching () {    echo $this->name. " Being ". $this->school." Teaching, with a monthly salary of ". $this->wage." <br/> ";  }} $teacher 1 = new Teacher ("Kaifu", "Male", "n"), $teacher 1->school = "edu"; $teacher 1->wage = 4000; $teacher 1->say (); $ Teacher1->study (); $teacher 1->teaching ();? >

Results:

Kaifu Speaking Kaifu is Edu learning Kaifu is edu teaching, monthly salary of 4000

I hope this article is helpful to you in PHP programming.