<?php
class calculator
{
public function sum($x, $y)
{
return $x + $y;
}
public function mul($x, $y)
{
return $x * $y;
}
public function fak($n)
{
if ($n == 0) {
return 1;
}
return $this->fak($n - 1) * $n;
}
}
//--------------------------------------------
//--------------------------------------------
//--------------------------------------------
$calc = new calculator();
for ($i = 0; $i < 10; $i++) {
echo "{$i} + {$i} = " . $calc->sum($i, $i) . "<br>";
echo "{$i} * {$i} = " . $calc->mul($i, $i) . "<br>";
echo "{$i}! = " . $calc->fak($i) . "<br>";
echo "<hr>";
}
require_once './calculator.php';
$obj = new calculator();
echo '<pre>';
print_r($_POST);
$first = $_POST['first-number'];
$second = $_POST['second-number'];
$button = $_POST['btn'];
if ($button == 'add') {
$add = $obj->add($first, $second);
}
if ($button == 'sub') {
$add = $obj->sub($first, $second);
}
if ($button == 'mul') {
$add = $obj->mul($first, $second);
}
if ($button == 'div') {
$add = $obj->div($first, $second);
}
if ($button == 'mod') {
$add = $obj->mod($first, $second);
}
?>
<html>
<head>
<title>Calculator</title>
</head>
<body>
