Witam,
Proszę o pomoc odnośnie odświeżania,
mianowicie po dodaniu ogłoszenia w moim serwisie w końcowym jego etapie informującym o jego dodaniu po wciśnięciu odśwież lub f5 następuje ponowne dodanie tego samego ogłoszenia,
jak to najlepiej zabezpieczyć?

wstawiam kod odpowiedzialny za końcowy etap dodania ogłoszenia:

[PHP] pobierz, plaintext 
//***ZAKONCZENIE DODAWANIA OGLOSZENIA***//
 
function end_add_ad($uniqfolder, $title, $make_id, $model_id, $model_desc, $type, $production, $damaged, $price, $exchange, $negotiation, $capacity, $power, $power_sort, $mileage, $gearbox, $fuel, $dors, $color, $metalic, $preview_1, $preview_2, $insurer_oc_1, $insurer_oc_2, $first_rejstraction_1, $first_rejstraction_2, $extra_info, $equipment, $description, $expir_time, $promotion, $price_full)
    {global $prefix, $db, $nukeurl, $op, $userinfo, $sitename;
 
  include("header.php");
  OpenTableMain();
    upperMenu($op);
    $sellerid = user();
    if (!empty($preview_1)) {
      $review = strtotime ("01/$preview_1/$preview_2");
    } else {
      $review = '';
    }
    if (!empty($insurer_oc_1)) {
      $insurer_oc = strtotime ("01/$insurer_oc_1/$insurer_oc_2");
    } else {
      $insurer_oc = '';
    }
    if (!empty($first_rejstraction_1)) {
      $first_rejstraction = strtotime ("01/$first_rejstraction_1/$first_rejstraction_2");
    } else {
      $first_rejstraction = '';
    }
    $add_date = time();
    $expir_time = $add_date+$expir_time*24*60*60;
    $state = user_state();
    $title = urlencode($title);
    $description = urlencode($description);
    	$result_add = $db->sql_query("INSERT INTO ".$prefix."_ads_data (title, mark, model, model_desc, type, production, damaged, price, exchange, negotiation, capacity, power, power_sort, mileage, gearbox, fuel, dors, color, metalic, review, insurer_oc, first_rejstraction, extra_info, equipment, description, sellerid, expir_time, add_date, uniqfolder, state, promotion) VALUES ('$title', '$make_id', '$model_id', '$model_desc', '$type', '$production', '$damaged', '$price', '$exchange', '$negotiation', '$capacity', '$power', '$power_sort', '$mileage', '$gearbox', '$fuel', '$dors', '$color', '$metalic', '$review', '$insurer_oc', '$first_rejstraction', '$extra_info', '$equipment', '$description', '$sellerid', '$expir_time', '$add_date', '$uniqfolder', '$state', '$promotion')");
	if(!$result_add) {
	  $note = "op = $op";
	  $result_error = $db->sql_query("INSERT INTO ".$prefix."_ads_errors (errorid, date, note) VALUES ('1', '$add_date', '$note')");
	  echo "<br />";
	  info_box("warning", _NOADDAD);
	  } else {
	  echo "<br />";
	  $last_id = mysql_insert_id();
	  $date_time = time();
	  $result_pay = $db->sql_query("INSERT INTO ".$prefix."_payment (type, sum, user, date) VALUES ('1', '-$price_full', '$sellerid', '$date_time')");
 
	  //POBIERANIE SZABLONU MAILA Z POTWIERDZENIEM DODANIA I JEGO WYSYLANIE//
	  $title = urldecode($title);
	  $to = $userinfo['user_email'];
	  $subject = _YOUADDNEWAD.' '.$sitename;
	  $id = $last_id;
	  $start_date = date("Y-m-d H:i:s", $add_date);
	  $end_date = date("Y-m-d H:i:s", $expir_time);
	  $price = number_format($price, 2, ',', ' ');
	  $tmpl_file = "includes/new_ad_mail.html";
	  $thefile = implode("", file($tmpl_file));
	  $thefile = addslashes($thefile);
	  $thefile = "\$r_file=\"".$thefile."\";";
	  eval($thefile);
	  $message = $r_file;
	  $headers  = 'MIME-Version: 1.0' . "\r\n";
	  $headers .= 'Content-type: text/html; charset=iso-8859-2' . "\r\n";
	  $headers .= 'To: '.str_replace(',', ' ', $userinfo['name']).' < '.$userinfo['user_email'].' >' . "\r\n";
	  $headers .= 'From: '.$sitename.' < '.$adminmail.' >' . "\r\n";
	  mail($to, $subject, $message, $headers);
	  //------------------------------------------------------------------//
	  info_box("tip", _ADADD);
	  $i = 0;
	  $result = $db->sql_query("SELECT sum FROM ".$prefix."_payment where user='$sellerid' ORDER BY date DESC");
	    while ($row = $db->sql_fetchrow($result)) {
	      $price_one[$i] = $row['sum'];
	      $i++;
	    }
	  $price_all = @array_sum($price_one);
	  info_box("tip", _YOURDEBET.@number_format($price_all, 2, ',', ' ')._PLN);
	  echo "<center>"._SEEAD."<br /><a href=\"modules.php?name=Ads&op=show_item&id=$last_id\"><b>".$nukeurl."/modules.php?name=Ads&op=show_item&id=".$last_id."</b></a></center>";
	  }
 CloseTableMain();
 include("footer.php");
}
//***KONIEC ZAKONCZENIA DODAWANIA OGLOSZENIA***///
 
[PHP] pobierz, plaintext 

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