Chi mi fa un favore grande grande?
Non riesco a modificare il codice in modo tale da inserire i dati nel mio database MySQL. C'è qualcuno di buona volontà che mi possa dare una mano? Grazie mille anticipate

Codice PHP:
<?php
//Sostituire alle XXXXXXXXXXXX i dati della propria applicazione
define('FACEBOOK_SECRET', 'XXXXXXXXXXXX', true);
define('FACEBOOK_ID', 'XXXXXXXXXXXX', true);
  
function parse_signed_request($signed_request, $secret) {
  list($encoded_sig, $payload) = explode('.', $signed_request, 2); 
  
  // decodifico i dati
  $sig = base64_url_decode($encoded_sig);
  $data = json_decode(base64_url_decode($payload), true);
  
  if (strtoupper($data['algorithm']) !== 'HMAC-SHA256') {
    error_log('Algoritmo sconosciuto. Ci aspettiamo HMAC-SHA256');
    return null;
  }
  
  // verifico la firma digitale
  $expected_sig = hash_hmac('sha256', $payload, $secret, $raw = true);
  if ($sig !== $expected_sig) {
    error_log('Firma digitale non corretta!');
    return null;
  }
  
  return $data;
}
  
function base64_url_decode($input) {
    return base64_decode(strtr($input, '-_', '+/'));
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
    ".w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns=".w3.org/1999/xhtml" lang="it" xml:lang="it" xmlns:fb=".facebook.com/2008/fbml">
  <head>
    <title>
      Registration plug-in
    </title>
    <meta http-equiv="Content-Type" content="text/html; charset=us-ascii" />
  </head>
  <body style="font-family:verdana;">
        <div style="width: 600px;margin-left:auto;margin-right: auto;">
 
     <?php if (isset($_REQUEST['signed_request'])) { 
              $response = parse_signed_request($_REQUEST['signed_request'], FACEBOOK_SECRET); ?>
 
      <h2>
        Registration plug-in
      </h2>
      


        [i]Questi sono i dati che sono stati indicati nel modulo di registrazione[/i]
      </p>
      


        Nome e cognome: <?=$response["registration"]["name"];?>
        </p>
      


        Email: <?=$response["registration"]["email"];?>
        </p>
      


        Nome: <?=$response["registration"]["first_name"];?>
        </p>
      


        Cognome: <?=$response["registration"]["last_name"];?>
        </p>
      


        Sesso: <?php if ($response["registration"]["gender"] == 'male') echo 'Uomo'; if ($response["registration"]["gender"] == 'female') echo 'Donna' ?>
      </p>
      


        Mese di nascita: <?=preg_replace('/(\d{1,2})\/(\d{1,2})\/(19|20)(\d{2})/', '\2', $response["registration"]["birthday"]);?>
        </p>
      


        Giorno di nascita: <?=preg_replace('/(\d{1,2})\/(\d{1,2})\/(19|20)(\d{2})/', '\1', $response["registration"]["birthday"]);?>
        </p>
      


        Anno di nascita: <?=preg_replace('/(\d{1,2})\/(\d{1,2})\/(19|20)(\d{2})/', '\3\4', $response["registration"]["birthday"]);?>
        </p>
</div>
 
<?php //Se non sono presenti i dati visualizzo il modulo di registrazione di FB 
} else { ?>
 
<h2>Registration plug-in</h2>
<fb:registration
  fields="name,email,first_name,last_name,gender,birthday"
  width="450">
</fb:registration>
</div>
<div id="fb-root"></div> 
<script type="text/javascript">
window.fbAsyncInit=function(){FB.init({appId:"<?=facebook_id?>",status:true,cookie:true,xfbml:true})};(function(){var a=document.createElement("script");a.async=true;a.src=document.location.protocol+"//connect.facebook.net/it_IT/all.js";document.getElementById("fb-root").appendChild(a)})();
</script>
 
<?php } ?>
 
</body> 
</html>