小编Bas*_*ele的帖子

我创建了一个名为Calculator的类,它带有加,减,乘和除功能.计算器仅限于添加两个数字并返回结果.我对OOP比较陌生,想在课堂上得到一些输入,我是否采取了漫长的路线,如果我做的是有另一种简化课程的方法.

这是代码:

class Calculator {
    private $_val1 , $_val2;

    public function __construct($val1, $val2){
        $this->_val1 = $val1;
        $this->_val2 = $val2;
    }

    public function add(){
        return $this->_val1 + $this->_val2;
    }

    public function subtract(){
        return $this->_val1 - $this->_val2;
    }

    public function multiply (){
        return $this->_val1 * $this->_val2;
    }

    public function divide () {
        return $this->_val1 / $this->_val2;
    }
}

$calc = new Calculator(3,4);
echo "<p>3 + 4 = ".$calc->add(). "</p>";

$calc = new Calculator (15,12);
echo "<p>15 - 12 = ".$calc->subtract(). "</p>";

$calc …