if(isset($city))

$curl = curl_init();
$headers = array();
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
curl_setopt($curl, CURLOPT_HEADER, 0);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_TIMEOUT, 30);
$json = curl_exec($curl);
curl_close($curl);

$data = json_decode($json);

if(!empty($data->list[0]->name)) {
?>
<div>
   Stadt: <strong><?php echo $data->list[0]->name ?></strong><br />
   Aktuell:<strong><?php echo number_format($data->list[0]->main->temp - 273.15, 1, ',', '') ?> &deg; C </strong><br />
   Temperatur (heute):  <br />
   min. <?php echo number_format($data->list[0]->main->temp_min - 273.15, 1, ',', '') ?> &deg; C<br />
   max. <?php echo number_format($data->list[0]->main->temp_max - 273.15, 1, ',', '') ?> &deg; C<br />
   Luftfeuchtigkeit: <?php echo number_format($data->list[0]->main->humidity)?> %<br />
   Windgeschwindigkeit: <?php echo $data->list[0]->wind->speed ?>m/s<br />
   Windrichtung: <?php echo $data->list[0]->wind->deg ?>&deg;<br />
   Wolken: <?php echo $data->list[0]->clouds->all ?>%<br />
   Wetter: <?php echo $data->list[0]->weather->description ?><br />
</div>