PHP Calculator using OOPs method


CALCULATOR USING OOP




<?php 

if ($_SERVER["REQUEST_METHOD"] == 'POST') {
    $num1 = $_REQUEST['num1'];
    $num2 = $_REQUEST['num2'];

    $btn = $_REQUEST['btn'];
        $obj = new calc();
        $result = $obj->$btn($num1,$num2);
        echo $result;
}

class calc{

    function add($num1,$num2){
        return $num1 + $num2;
    }
    function sub($num1,$num2){
        return $num1 - $num2;
    }
    function mul($num1,$num2){
        return $num1 * $num2;
    }
    function div($num1,$num2){
        return $num1 / $num2;
    }
}



?>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <form method="POST">

        <input type="text" name="num1" placeholder="Enter Value:"><br><br>
        <input type="text" name="num2" placeholder="Enter Value:"><br><br>
        
        <input type="submit" name="btn" value="add">
        <input type="submit" name="btn" value="sub">
        <input type="submit" name="btn" value="mul">
        <input type="submit" name="btn" value="div">

    </form>
</body>
</html>

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