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//定义一个抽象类
- abstract class Staff
- {
- abstract function hire();
- abstract function fire();
- abstract function promote();
- abstract function demote();
- }
?>
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例2,php抽象类的例子
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class Employee {
- private $title;
- private $lastName;
- private $firstName;
- protected $salary;
- private $ratio = 0;
-
- public function __construct($title, $firstName, $mainName, $salary ) {
- $this->title = $title;
- $this->firstName = $firstName;
- $this->lastName = $mainName;
- $this->salary = $salary;
- }
public function firstName() {
- return $this->firstName;
- }
public function getlastName() {
- return $this->lastName;
- }
public function setRatio( $num ) {
- $this->ratio=$num;
- }
public function getRatio() {
- return $this->ratio;
- }
-
- public function getTitle() {
- return $this->title;
- }
public function getSalary() {
- return ($this->salary - $this->ratio);
- }
public function getFullName() {
- return "{$this->firstName}" . " {$this->lastName}";
- }
function getSummaryLine() {
- $base = "$this->title ( $this->lastName, ";
- $base .= "$this->firstName )";
- return $base;
- }
- }
//定义抽象类
- abstract class EmployeeWriter {
- abstract static function write( Employee $shopProduct );
- }
class TextEmployeeWriter extends EmployeeWriter {
- static function write( Employee $shopEmployee ) {
- $str = "{$shopEmployee->getTitle()}: ";
- $str .= $shopEmployee->getFullName();
- $str .= " ({$shopEmployee->getSalary()})\n";
- print $str;
- }
- }
$developer1 = new Employee("A", "A1", "A2", 5.99 );
- TextEmployeeWriter::write( $developer1 );
- ?>
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