<?php
$accountsid = '';  //  YOUR TWILIO ACCOUNT SID
$authtoken = '';   //  YOUR TWILIO AUTH TOKEN
$fromNumber = '';  //  PHONE NUMBER CALLS WILL COME FROM

$dbhost = '';  //  YOUR DATABASE HOST
$dbname = '';  //  YOUR DATABASE NAME
$dbuser = '';  //  YOUR DATABASE USER
$dbpass = '';  //  YOUR DATABASE PASS
?>

<?php
include("config.php");
include("pdo.class.php");
include 'Services/Twilio.php';

$action = isset($_GET['action']) ? $_GET['action'] : null;
switch($action){
  case 'save':
    $fields = array('phone_number','status');
    $pfields = array();
    $_POST['status'] = 1;
    foreach( $fields as $k){
      $v = $_POST[$k];
      $pfields[] = "{$k} = '{$v}'";
    }
    $sql = "INSERT INTO subscribers SET ".implode(",",$pfields);
    $pdo = Db::singleton();
    $pdo->exec($sql);
    $qid = $pdo->lastInsertId();
    if( isset($qid) && !empty($qid) ){
?>
      <p>Thank you, you have been subscribed to receive surveys</p>
<?php
    }
  default:
?>
    <h2>Subscribe to receive surveys</h2>
    <form method="POST" action="subscribe.php?action=save">
    <table>
    <tr>
      <td>Please enter your phone number</td>
      <td><input type="text" name="phone_number" /></td>
    </tr>
    </table>
    <button type="submit">Save</button>
    </form>
<?php
    break;
}
?>