Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at C:\Program Files\Apache Software Foundation\Apache2.2\htdocs\telefondefteri\duzenle .php:1) in C:\Program Files\Apache Software Foundation\Apache2.2\htdocs\telefondefteri\duzenle .php on line 2

Bu hata mesajı ne demek:S anlamadım.


<?php
session_start();
if($_SESSION["girdi"] != true){
header("Location:gir.php");
die();
}
include_once('baglan.php');
$id = (int) $_GET["id"];
$sorgu = mysql_query("select * from defteri where id=$id");
$veri = mysql_fetch_assoc($sorgu);
?>


...........


Kod bu şekilde