PHP İle Açık Port Kontrol Etme

<form action="" method="POST">
    <input type="text" name="ipaddress" id="ipaddress" placeholder="IP Adresi" value="<?=@$_POST['ipaddress'];?>" required="" /><br />
    <input type="number" name="port" id="port" placeholder="Port" value="<?=@$_POST['port'];?>" required="" /><br /><br />
    <li><input type="submit" name="submit" class="button" value="Kontrol Et"></input></li>
</form>
<?php
    if(isset($_POST['submit'])) {
        $data = [
            'ipaddress' => $_POST['ipaddress'],
            'port' => $_POST['port']
        ];
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, 'https://api.avokadogames.com/portcontrol/portcontrol.php');
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
        $response = curl_exec($ch);
        curl_close($ch);
        $result = json_decode($response, true);

        if($result['message'] == "ACTIVE"){
            echo '<font color="green">'.@$_POST["ipaddress"].' port-'.@$_POST["port"].' açık</font>';
        }elseif($result['message'] == "DEACTIVE"){
            echo '<font color="red">'.@$_POST["ipaddress"].' port-'.@$_POST["port"].' kapalı</font>';
        }

    }
?>