troble sms gateway

Halo agan2, ane nuwbie mau mohon bantuan agan2 sekalian. ane bikin program sms gateway akademik pendaftaran mata kuliah gan. Gimana caranya agar bisa mendaftra lebih dari 1 mata kuliah dengan 1 kali sms gan?
ane bisanya cuma daftra 1 mata kuliah aja gan, kalau ane input 2 mata kuliah 1 kali sms, data yang kesimpan di table daftar cuma 1 mata kuliah yang pertama input pertama aja gan.
contoh yang ane bikin REG[spasi]NIM[spasi]KODE_MATAKULIAH sedangkan ane butuhin REG[spasi]NIM[spasi]KODE_MATAKULIAH_1,KODE_MATAKULIAH_2,KODE_MATAKULIAH_3

ini code program run sms ane gan, ane bingung salahnya dimana gan. mohon di bantu master gateway.

<?php

include 'koneksi.php';

include 'function.php';

$reply=null;



function sendsms($nohp, $pesan, $modem,$idsms)

{

 $query3 = "INSERT INTO outbox (DestinationNumber, SenderID, TextDecoded, CreatorID) VALUES ('$nohp', '$modem', '$pesan', 'Gammu')";

 $query4= "UPDATE inbox SET Processed='true' WHERE ID = '$idsms'";

 mysql_query($query3);

 mysql_query($query4);

}



$query = "SELECT * FROM inbox WHERE Processed='false'";

$hasil = mysql_query($query) or die(mysql_error());

while($data=mysql_fetch_array($hasil))

 {

  //baca no pengirim

  $noHP= $data['SenderNumber'];

  //baca sms id

  $smsID= $data['ID'];

  //baca isi sms

  $sms=strtoupper($data['TextDecoded']);



//memparsing isi sms berdasar karakter 

 $split=explode(" ",$sms);

 $command =$split[0];

 $nim = $split[1];

 $mk = $split[2];

 

 if (!empty($mk)) {

  //ambil matakuliah

 $qmkk="SELECT ma_kul,id_makul from makul where kode='$mk'";

 $exeq=mysql_query($qmkk);

  $datamk=mysql_fetch_array($exeq);

  $matakuliah=$datamk['ma_kul'];

  $kdmk=$datamk['id_makul'];



  }



  if (!empty($nim)) {

  //ambil nim

 $qnim="SELECT nim,nama_depan from mahasiswa where nim='$nim'";

 $exeqm=mysql_query($qnim)or die(mysql_error());

  $datanim=mysql_fetch_array($exeqm);

  $nimmu=$datanim['nim'];

  $cek=mysql_num_rows($qnim);

  }  



 $que=mysql_query("SELECT * FROM reply WHERE keyword='$command'");

 while($f=mysql_fetch_array($que)){

  if($command == $f['keyword']){

     $bb=$f['keyword'];

  $dd=$f['reply'];

  } else {

   $bb="hehe";

   }

  }



 if ($bb == 'REG'){

   

 //isi

 if (empty($kdmk)){

 $reply = "Maaf mata kuliah yang anda masukkan tidak terdaftar, mohon periksa kembali mata kuliah anda! ";

 } else {

  if (empty($nimmu)) {

   $reply="Maaf NIM anda tidak terdaftar sebagai mahasiswa, mohon periksa kembali NIM anda! ".$nimmu;

   }else{

    $tgl=date('y-m-d');

    $kdmks = explode(",", $kdmk);

    foreach ($kdmks as $value) {

    $querydaf = "INSERT into DAFTAR values('','$nim','$value','$tgl','Belum Konfirmasi') ";

    $hasildaf = mysql_query($querydaf) or die(mysql_error()." 5");  

    $reply = $dd;

    }

   }

  }

 }



 else if (empty($dd)){

  $reply ="Maaf format yang anda kirim salah, silahkan ketik INFO untuk format sms yang benar. Terima kasih";

 }



 sendsms($noHP, $reply,'phoneKU',$smsID); 

 }



// menampilkan semua sms di inbox

$query = "SELECT * FROM inbox ORDER BY ReceivingDateTime DESC LIMIT $offset,$limit";

$hasil = mysql_query($query) or die(mysql_error());



echo " <div class='table-responsive'>";

echo "<table class='table table-striped table-bordered table-hover' id='dataTables-example'>";

echo       "<thead>

           <tr>

           <th>No.</th>

     <th>Pesan</th>

           <th>Pengirim</th>

           <th>Waktu</th>

           <th>Status</th>

           <th colspan='2'>Act</th>

           </tr>

           </thead> 

     <tbody>";

$no=1;

while ($data = mysql_fetch_array($hasil))

{

 $nohp = $data['SenderNumber'];

 $modem = $data['RecipientID']; 

 $time = $data['ReceivingDateTime'];

 $text = $data['TextDecoded'];

 $status=$data['Processed'];

 $id=$data['ID'];



 $sms=strtoupper($data['TextDecoded']);

 $split=explode(" ",$sms);

 $command =$split[0];

 $nim = $split[1];

 $mk = $split[2];

 

 if ($command =='REG') {

  $konf="KONFIRM";

  $lokasi =$_SERVER['PHP_SELF']."?pg=pg_daftar";

  $kon="DEL";

  $loka=$_SERVER['PHP_SELF']."?pg=pg_inbox&op=del&id=$id";

 

 }else{

  $konf="DEL";

  $lokasi=$_SERVER['PHP_SELF']."?pg=pg_inbox&op=del&id=$id";

  $kon="-";

  $loka="";

 }



 echo "<tr><td>".$no++."</td><td>".$text."</td><td>".$nohp."</td><td>".$time."</td><td class='td-actions'>"

 .$status."</td><td><a href='".$lokasi."'>".$konf."</a></td><td><a href='".$loka."'>".$kon."</a></td></tr>";

 }



 echo "</tbody></table></div>";

  $link=$_SERVER['PHP_SELF']."?pg=pg_inbox&page=";

  $countTotalRow = mysql_query('SELECT COUNT(*) AS total FROM inbox');

  $queryResult = mysql_fetch_assoc($countTotalRow);

  $totalRow = $queryResult['total'];

  $totalPage = ceil($totalRow / $limit);

  $page = 1;

  while ($page <= $totalPage) 

   {

   echo '<a href="?pg=pg_inbox&page='.$page.'&perPage='.$limit.'">'.$page.'</a>';

    if ($page < $totalPage)

   echo " | ";

    $page++;

   }



 ?>