Aquileo | Test-calculator/index.php at main · rakesh666exe/Test-calculator · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Simple PHP Calculator</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            margin: 50px;
        }
        form {
            max-width: 300px;
            margin: auto;
        }
        input, select, button {
            display: block;
            width: 100%;
            margin: 10px 0;
            padding: 8px;
            font-size: 16px;
        }
        .result {
            text-align: center;
            margin-top: 20px;
            font-size: 20px;
            color: green;
        }
    </style>
</head>
<body>
    <h1>Simple PHP Calculator</h1>
    <form method="POST">
        <input type="number" name="num1" placeholder="Enter first number" step="any" required>
        <input type="number" name="num2" placeholder="Enter second number" step="any" required>
        <select name="operation" required>
            <option value="">Select Operation</option>
            <option value="add">Addition (+)</option>
            <option value="subtract">Subtraction (-)</option>
            <option value="multiply">Multiplication (×)</option>
            <option value="divide">Division (÷)</option>
        </select>
        <button type="submit">Calculate</button>
    </form>

    <?php
    if ($_SERVER['REQUEST_METHOD'] == 'POST') {
        $num1 = $_POST['num1'];
        $num2 = $_POST['num2'];
        $operation = $_POST['operation'];
        $result = '';

        switch ($operation) {
            case 'add':
                $result = $num1 + $num2;
                break;
            case 'subtract':
                $result = $num1 - $num2;
                break;
            case 'multiply':
                $result = $num1 * $num2;
                break;
            case 'divide':
                if ($num2 != 0) {
                    $result = $num1 / $num2;
                } else {
                    $result = 'Error: Division by zero';
                }
                break;
            default:
                $result = 'Invalid operation selected';
        }

        echo "<div class='result'>Result: $result</div>";
    }
    ?>
</body>
</html>