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php抽象类的例子 学习php抽象类的实现方法

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2016-07-25 08:56:10 561浏览

  3. //定义一个抽象类

  4. abstract class Staff
  5. {
  6. abstract function hire();
  7. abstract function fire();
  8. abstract function promote();
  9. abstract function demote();
  10. }

  11. ?>

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例2，php抽象类的例子

  3. class Employee {

  4. private $title;
  5. private $lastName;
  6. private $firstName;
  7. protected $salary;
  8. private $ratio = 0;
  10. public function __construct($title, $firstName, $mainName, $salary ) {
  11. $this->title = $title;
  12. $this->firstName = $firstName;
  13. $this->lastName = $mainName;
  14. $this->salary = $salary;
  15. }

  16. public function firstName() {

  17. return $this->firstName;
  18. }

  19. public function getlastName() {

  20. return $this->lastName;
  21. }

  22. public function setRatio( $num ) {

  23. $this->ratio=$num;
  24. }

  25. public function getRatio() {

  26. return $this->ratio;
  27. }
  29. public function getTitle() {
  30. return $this->title;
  31. }

  32. public function getSalary() {

  33. return ($this->salary - $this->ratio);
  34. }

  35. public function getFullName() {

  36. return "{$this->firstName}" . " {$this->lastName}";
  37. }

  38. function getSummaryLine() {

  39. $base = "$this->title ( $this->lastName, ";
  40. $base .= "$this->firstName )";
  41. return $base;
  42. }
  43. }

  44. //定义抽象类

  45. abstract class EmployeeWriter {
  46. abstract static function write( Employee $shopProduct );
  47. }

  48. class TextEmployeeWriter extends EmployeeWriter {

  49. static function write( Employee $shopEmployee ) {
  50. $str = "{$shopEmployee->getTitle()}: ";
  51. $str .= $shopEmployee->getFullName();
  52. $str .= " ({$shopEmployee->getSalary()})\n";
  53. print $str;
  54. }
  55. }

  56. $developer1 = new Employee("A", "A1", "A2", 5.99 );

  57. TextEmployeeWriter::write( $developer1 );
  58. ?>

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