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"> <me...