PHP基于工厂模式实现的计算器实例

本文实例讲述了PHP基于工厂模式实现的计算器。分享给大家供大家参考。具体如下：abstractc

本文实例讲述了PHP基于工厂模式实现的计算器。分享给大家供大家参考。具体如下：

abstract class Calculator
{
 private $number1;
 private $number2;
 public $result;
 /**
 * @return the $number2
 */
 public function getNumber2() {
 return $this->number2;
 }
 /**
 * @param field_type $number2
 */
 public function setNumber2($number2) {
 $this->number2 = $number2;
 }
 /**
 * @return the $number1
 */
 public function getNumber1() {
 return $this->number1;
 }
 /**
 * @param field_type $number1
 */
 public function setNumber1($number1) {
 $this->number1 = $number1;
 }
 abstract function get_result();
 }
class Add extends Calculator
{
 public function get_result($number1,$number2)
 {
 return $number1+$number2;
 }
}
class Sub extends Calculator
{
 public function get_result($number1,$number2)
 {
 return $number1-$number2;
 }
}
class Mul extends Calculator
{
 public function get_result($number1,$number2)
 {
 return $number1*$number2;
 }
}
class Div extends Calculator
{
 public function get_result($number1,$number2)
 {
 return $number1/$number2;
 }
}
class Factory
{
 public function Building($notes)
 {
 if($notes=="+")
 {
 $add=new Add();
 return $add;
 }
 elseif ($notes=="-")
 {
 $sub=new Sub();
 return $sub;
 }
 elseif($notes=="*")
 {
 $mul=new Mul();
 return $mul;
 }
 else
 {
 $div=new Div();
 return $div;
 }
 }
}

希望本文所述对大家的php程序设计有所帮助。