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。