<?php require 'class.calculator.php'; $calculator = new calculator(); $calculator->num1 = 10.5; $calculator->num2 = 4.5; echo "Welcome to our simple calculator class"; echo "<br>"; echo "The addition between " . $calculator->num1 . " and " . $calculator->num2 . " is " . $calculator->add(); echo "<br>"; echo "The subtraction between " . $calculator->num1 . " and " . $calculator->num2 . " is " . $calculator->subtract(); echo "<br>"; echo "The multiplication between " . $calculator->num1 . " and " . $calculator->num2 . " is " . $calculator->multiply(); echo "<br>"; echo "The division between " . $calculator->num1 . " and " . $calculator->num2 . " is " . $calculator->divide();
public function __construct($num1, $num2)
{
$this->num1 = $num1;
$this->num2 = $num2;
}
public function add()
{
return $this->num1 + $this->num2;
}
public function subtract()
{
return $this->num1 - $this->num2;
}
public function multiply()
{
return $this->num1 * $this->num2;
}
public function divide()
{
return $this->num1 / $this->num2;
}
}
// end of class
$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 = new calculator(20, 2);
echo "<p> 20 * 2 = " . $calc->multiply() . "</p>";
$calc = new calculator(20, 8);
echo "<p> 20 / 2 = " . $calc->divide() . "</p>";
function multiply()
{
echo "计算结果是:" . $this->a * $this->b;
}
function divide()
{
if ($this->b == 0) {
echo "计算结果是:wrong";
} else {
echo "计算结果是:" . $this->a / $this->b;
}
}
}
$num1 = $_POST["num1"];
$num2 = $_POST["num2"];
$p = new calculator($num1, $num2);
$oper = $_POST["oper"];
switch ($oper) {
case "+":
$p->add();
break;
case "-":
$p->substract();
break;
case "*":
$p->multiply();
break;
case "/":
$p->divide();
break;
}
