Merhabalar,
Çok araştırdım ama bulamadım, üyelik formum var bununla ilgili telefon numarasına bir sms gitmesini ve sisteme giriş yapmasını doğruysa giriş yapmasını istiyorum çözemedim yardımcı olurmusunuz ?

netgsm api

function SMSgonderHttpGET(){
$username = "s"; //
$telno = $_POST["telnoonay"]; //
$password = urlencode("s"); //
$mesaj = rand(1,999999); //

$url= "https://api.netgsm.com.tr/sms/send/get/?usercode=$username&password=$password&gsmno=$telno&message=172721&msgheader=baslik";

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$http_response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);

if($http_code != 200){
echo "$http_code $http_response\n";
return false;
}
$balanceInfo = $http_response;
echo "MesajID : $balanceInfo";
return $balanceInfo;
}

SMSgonderHttpGET();

 try
{

$connect = new PDO("mysql:host=$host; dbname=$database", $username, $password);
$connect->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
if(isset($_POST["login"]))
{
if(empty($_POST["username"]) || empty($_POST["password"]))
{
$message = '<label>All fields are required</label>';
}
else
{
$query = "SELECT * FROM from_veritabani WHERE kullaniciadi = :username AND kullanicisifre = :password";
$statement = $connect->prepare($query);
$statement->execute(
array(
'username' => $_POST["username"],
'password' => $_POST["password"]

)


);

$count = $statement->rowCount();
if($count > 0)
{
$_SESSION["username"] = $_POST["username"];
$_SESSION["password"] = $_POST["password"];
header("location:index.php");

}
else
{
$message = '<label>Wrong Data</label>';
}

}

}

}
catch(PDOException $error)
{
$message = $error->getMessage();
}

buda formum

 <form class="form-horizontal m-t-20" method="POST">

<div class="form-group ">
<div class="col-xs-12">
<input class="form-control" type="text" required="" name="username" required placeholder="Kullanıcı Adı">
</div>
</div>
<div class="form-group ">
<div class="col-xs-12">
<input class="form-control" type="text" required="" name="telnoonay" required placeholder="Kullanıcı Adı">
</div>
</div>

<div class="form-group">
<div class="col-xs-12">
<input class="form-control" type="text" id='textbox' required="" name="password" required placeholder="***********">
</div>
</div>



<div class="form-group text-center m-t-40">
<div class="col-xs-12">
<button class="btn btn-pink btn-block text-uppercase waves-effect waves-light" type="submit" name="login">Giriş Yap</button>
</div>
</div>

<div class="form-group m-t-30 m-b-0">
<div class="col-sm-12">
<i class="fa fa-lock m-r-5"></i> 
</div>
</div>
            </form>