PHP中面相对象对象的知识点整理

 对象产生的步骤

对象的内存分布：

面向对象的特性

1. //类里面的方法不能修改
2. //类不能被继承
3. final class souji {
5. final public $pinpai; //报错
7. final function congdian() { //无效
8. echo $this->pinpai . "手机通过10v电压来充电";
9. }
10. public function kaijidonghua() {
11. echo "<<< 没有开机动画 >>>>";
12. }
13. }
14. class moto extends souji {
15. public function __construct() {
16. // $this->pinpai = "摩托罗拉";
17. $this->congdian();
18. }
19. public function kaijidonghua() {
20. echo "摩托罗拉商标";
22. }
23. }
26. $li = new moto();
27. $li->kaijidonghua();
32. //定义常量
33. define("WEBNAME", "文豆");
34. function aa(){
35. echo WEBNAME."专注PHPWEB开发";
36. }
37. aa();
40. class caiwu{
41. const suilv=0.05;
42. function __construct(){
43. echo WEBNAME;
44. }
45. function kaigonzi($xingming,$gongzi){
46. $gongzi = $gongzi-$gongzi*self::suilv;
47. return $xingming."的工资是：".$gongzi."元";
49. }
50. }
51. /*员工类*/
52. class yuangong{
53. private $xingming;//姓名
54. private $gongzisu;//工资数
55. function __construct($xingming,$gongzisu){
56. $this->xingming = $xingming;
57. $this->gongzisu = $gongzisu;
58. }
59. function kaizi(){
60. $caiwu = new caiwu();
61. return $caiwu->kaigonzi($this->xingming, $this->gongzisu);
62. }
63. }
64. $lisi = new yuangong("李四", "6000");
65. echo $lisi->kaizi();