serveur

$mysql_link=mysql_connect("localhost", "nomdemabase", "code");
mysql_select_db("nomdemabase", $mysql_link);
$sql = mysql_query("SELECT * FROM acces");
$row = mysql_fetch_array($sql);
  $code = $row['code1'];

   
     
 //on teste si le mot de passe correspond à la base de donnée
  if ( $acces == $code) {
  $query_Recordset2 = "SELECT * FROM acces where code1='$acces'";
$Recordset2 = mysql_query($query_Recordset2, $mysql_link) or die(mysql_error());
$row_Recordset2 = mysql_fetch_assoc($Recordset2);
$totalRows_Recordset2 = mysql_num_rows($Recordset2);
 $nom2 = $row_Recordset2['nom'];
  $prenom2 = $row_Recordset2['prenom'];
  
  $date=date("d-m-Y");
  $heure= date("H:i");

  $sujet="accès autorisé au programme";
  
     mysql_select_db("nomdemabase", $mysql_link);
   $sql="INSERT INTO listacces (nom, prenom, heure, date, recherche) VALUES ('$nom2', '$prenom2', '$heure', '$date', '$sujet')";
mysql_query($sql);
 
  header('Location: didi.php?nom='.$row_Recordset2['nom'].'');
}			

else {

header('Location: dodo.php');
exit;
}

if ($_POST['calc_resultat']=="") {
  header('Location: demandeacces.php');
  exit();
}

//on récupère les valeurs des champs   
   $acces = $_POST['calc_resultat'];  

$mysql_link=mysql_connect("localhost", "nomdemabase", "code");
mysql_select_db("nomdemabase", $mysql_link);
$sql = mysql_query("SELECT * FROM acces");
$row = mysql_fetch_array($sql);
  $code = $row['code1'];