memanggil semua kontak di database untuk sms gateway

hallo selamat siang, butuh bantuan cara pemanggilan semua no di database supaya sms nya kekirim ke semua .. ini ane udah buat tapi pas di klik kirim gagal.... sms.php

<form action="kirim.php" method="post" name="kirim">
     <div class="form-group">
      <div class="col-sm-10">
       <?php
       include'koneksi.php';
       $data = '0';
       $sql = 'SELECT * FROM contact';
       $result = mysqli_query($koneksi, $sql);
       ?>

       <?php
       if($data<=$result){
        foreach($result as $name) { ?>
         <input type="hidden" name="custId" value="<?php echo $row['id_contact'] ?>">
       <?php }
     } ?>
   </div>
 </div>

 <div class="form-group">
  <label for="exampleInputPassword4">Tulis Pesan</label>
  <textarea class="form-control" rows="10" type="text" name="pesan"  placeholder="Ketikan Pesan " required ></textarea>
</div>
<div class="form-group">
  <div class="input-group col-md-12">
    <button  type="submit" class="btn btn-primary" >Kirim Pesan </button>
  </div>
</div>
</form>

kirim.php

<?php
include'koneksi.php';

$tanggal = date("Y-m-d H:i:s");
$telepon=$_POST['custId'];
$message=$_POST['pesan'];
// Script Kirim SMS Api Zenziva
$userkey = "******"; //userkey lihat di zenziva
$passkey = "******"; // set passkey di zenziva

$sql 	= 'SELECT * FROM contact WHERE id_contact = "'.$telepon.'" ';
$result = mysqli_query($koneksi, $sql);

if ($result) {
	foreach ($result as $key) {

$url = "https://reguler.zenziva.net/apps/smsapi.php";
$curlHandle = curl_init();
curl_setopt($curlHandle, CURLOPT_URL, $url);
curl_setopt($curlHandle, CURLOPT_POSTFIELDS, 'userkey='.$userkey.'&passkey='.$passkey.'&custId='.$key['telpon'].'&pesan='.urlencode($message));
curl_setopt($curlHandle, CURLOPT_HEADER, 0);
curl_setopt($curlHandle, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curlHandle, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($curlHandle, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($curlHandle, CURLOPT_TIMEOUT,30);
curl_setopt($curlHandle, CURLOPT_POST, 1);
$results = curl_exec($curlHandle);
curl_close($curlHandle);



		$XMLdata = new SimpleXMLElement($results);
		$status = $XMLdata->message[0]->text;
		mysqli_query($koneksi,"insert into outbox (pesan,tujuan,status,date) values ('$message','$telepon','$status','$tanggal')");


		echo ("<script LANGUAGE='JavaScript'>window.alert('$status');window.location.href='sms_broadcast.php';</script>");

	}
}else{

		echo ("<script LANGUAGE='JavaScript'>window.alert('gagal $telepon');window.location.href='sms_broadcast.php';</script>");
}
?>