php类的定义与继承用法实例

本文实例讲述了php类的定义与继承用法。分享给大家供大家参考。具体如下：

2. /*
3. * class
4. */
5. class people {
6. public $name;
7. public $age;
8. function __construct($namec,$agec) {
9. $this->name = $namec;
10. $this->age = $agec;
11. }
12. protected function getmessage() {
13. return "姓名：".$this->name."
    "."年龄：".$this->age;
14. }
15. function __tostring() {
16. return "姓名：".$this->name."
    "."年龄：".$this->age;
17. }
18. function __destruct() {
19. echo "
    I am dead！";
20. }
21. function __call($key,$args) {
22. echo "
    ","你调用的方法名不存在：$key","
    ";
23. echo "你调用的参数是：",var_dump($args);
24. }
25. final function getf() {
26. echo "I am getf";
27. }
28. }
29. class xinxin extends people {
30. function getname() {
31. echo $this->getmessage();
32. echo '
    ';
33. echo parent::getmessage();
34. echo '
    ';
35. return "I am xinxin";
36. }
37. function getmessage() {
38. return "I am zilei getmessage
    ";
39. }
40. function getff() {
41. echo "I am new getf";
42. }
43. }
44. $pp = new people("小弟","33");
45. //$pp->name = "小明";
46. //$pp->age = "88";
47. echo $pp->name;
48. echo ' ';
49. echo $pp->age;
50. echo '
    
    ';
51. $xx = new xinxin("小小","13");
52. echo $xx->getname();
53. ?>

希望本文所述对大家的php程序设计有所帮助。