
<?php
 if ($_SERVER["REQUEST_METHOD"] == "POST") {
 $temperature = $_POST['temperature'];
 $unit = $_POST['unit'];
 $result = '';
 if ($unit == 'C') {
 // Konwersja z Celsjusza
 $fahrenheit = ($temperature * 9/5) + 32;
 $kelvin = $temperature + 273.15;
 $result = "Fahrenheit: " . round($fahrenheit, 2) . " °F, Kelvin: " . round($kelvin, 2) . " K";
 } elseif ($unit == 'F') {
 // Konwersja z Fahrenheita
 $celsius = ($temperature - 32) * 5/9;
 $kelvin = $celsius + 273.15;
 $result = "Celsjusz: " . round($celsius, 2) . " °C, Kelvin: " . round($kelvin, 2) . " K";
 } else {
 // Konwersja z Kelwina
 $celsius = $temperature - 273.15;
 $fahrenheit = ($celsius * 9/5) + 32;
 $result = "Celsjusz: " . round($celsius, 2) . " °C, Fahrenheit: " . round($fahrenheit, 2) . " °F";
 }
 echo "<div class='alert alert-success text-center'>Wynik: $result</div>";
 }
 ?>
 </div> <div class="container">
 <div class="row">
 <div class="col-md-4 col-md-offset-4"> <!-- Użycie klas Bootstrap do szerokości i wyśrodkowania -->
 <h1 class="text-center">Kalkulator Temperatur</h1>
 <form method="post" class="form-horizontal">
 <div class="form-group">
 <label for="temperature" class="col-sm-2 control-label">Temperatura</label>
 <div class="col-sm-10">
 <input type="number" name="temperature" id="temperature" class="form-control" required>
 </div>
 </div>
 <div class="form-group">
 <label for="unit" class="col-sm-2 control-label">Jednostka</label>
 <div class="col-sm-10">
 <select name="unit" id="unit" class="form-control" required>
 <option value="C">Celsjusz (°C)</option>
 <option value="F">Fahrenheit (°F)</option>
 <option value="K">Kelwin (K)</option>
 </select>
 </div>
 </div>
 <div class="form-group">
 <div class="col-sm-offset-2 col-sm-10">
 <button type="submit" class="btn btn-primary">Oblicz</button>
 </div>
 </div>
 </form>
 </div>
 </div>
 </div>
Cytat
<!-- Użycie klas Bootstrap do szerokości i wyśrodkowania -->
