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【PHP】 PHP计算器（工厂模式）

作者:damooo / 发布于2011/6/22/ 1023

<div>abstract class Calculator
 {
 private $number1;
 private $number2;
 public $result;
/**
 * @return the $number2
 */
public function getNumber2() {
return $this->number2;
}
<div>/**
 * @param field_type $number2
 */
public function setNumber2($number2) {
$this->number2 = $number2;
}
<div>/**
 * @return the $number1
 */
public function getNumber1() {
return $this->number1;
}
<div>/**
 * @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;
}
}
}

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　计算器　

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