попробуйте это
работа на нативном php
<select name="Kode" class="form-control">
<?php
$konek = mysqli_connect("localhost","root","","dbsia");
$query = "select * from tbpelajaran";
$hasil = mysqli_query($konek,$query);
while($data=mysqli_fetch_array($hasil)){
echo "<option value=$data[kodepelajaran]>$data[kodepelajaran]</option>";
}
?>