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SQL code: Upload Copy Format Clear

<?php // Инициализация переменных $num1 = $num2 = $num3 = 0; $sum = 0; $formSubmitted = false; // Проверка отправки формы if (isset($_POST['submit'])) { $formSubmitted = true; $num1 = isset($_POST['num1']) ? (float)$_POST['num1'] : 0; $num2 = isset($_POST['num2']) ? (float)$_POST['num2'] : 0; $num3 = isset($_POST['num3']) ? (float)$_POST['num3'] : 0; $sum = $num1 + $num2 + $num3; } ?> <!DOCTYPE html> <html> <head> <title>Калькулятор суммы</title> </head> <body> <h2>Сумма трёх чисел</h2> <form method="post" action=""> Число 1: <input type="number" step="any" name="num1" value="<?= $num1 ?>"><br><br> Число 2: <input type="number" step="any" name="num2" value="<?= $num2 ?>"><br><br> Число 3: <input type="number" step="any" name="num3" value="<?= $num3 ?>"><br><br> <input type="submit" name="submit" value="Вычислить сумму"> </form> <?php if ($formSubmitted): ?> <h3>Результат: <?= $num1 ?> + <?= $num2 ?> + <?= $num3 ?> = <?= $sum ?></h3> <?php endif; ?> </body> </html>

SQL Server: Preserve result

Result: Copy Clear

PHP code: Copy Format Clear

<?php if ($_SERVER["REQUEST_METHOD"] == "POST") { $num1 = isset($_POST['num1']) ? (int)$_POST['num1'] : 0; $num2 = isset($_POST['num2']) ? (int)$_POST['num2'] : 0; $num3 = isset($_POST['num3']) ? (int)$_POST['num3'] : 0; $sum = $num1 + $num2 + $num3; } ?> <!DOCTYPE html> <html lang="ru"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Форма для суммы чисел</title> </head> <body> <h1>Введите три числа:</h1> <form method="POST"> <label for="num1">Число 1:</label> <input type="number" name="num1" id="num1" required><br><br> <label for="num2">Число 2:</label> <input type="number" name="num2" id="num2" required><br><br> <label for="num3">Число 3:</label> <input type="number" name="num3" id="num3" required><br><br> <button type="submit">Отправить</button> </form> <?php if (isset($sum)) { echo "<h2>Сумма чисел: $sum</h2>"; } ?> </body> </html>

PHP version:

Show: Warnings Notice

Result: Copy Clear

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