<?php
include_once 'config.php';

 echo $id=$_POST['id'];
  
 $stmt = $db->prepare("SELECT * FROM sp_state_commission where state_id='$id'");
 $stmt->execute();
 ?><option selected="selected">Select Commission</option><?php
 while($row=$stmt->fetch(PDO::FETCH_ASSOC))
 {
  ?>
        <option value="<?php echo $row['id']; ?>"><?php echo $row['comm_name']; ?></option>
        <?php
 }

?>