Cannot send session cookie - headers already sent

[ burtonium @ 19.09.2004. 11:55 ] @

Pozdrav svima,

imam jedan problem, a taj je vidljiv na donjoj adresi:
http://213.161.21.80:8080/milojko/finalplan2/admin/index2.php

Prilazem i index2.php, kao i index3.php koji radi kako treba ali nije dokument u obliku xhtml. Samo me interesuje kako bih mogao da upotrebim xhtml header a da ne dobijam pomenuti error:

Code:

Warning: session_start(): Cannot send session cookie - headers already sent by
(output started at /var/www/localhost/htdocs/milojko/finalplan2/admin/index2.php:1)
in /var/www/localhost/htdocs/milojko/finalplan2/admin/index2.php on line 2

Code:

<?
session_start();
include ("protection/accesscontrol.php");
echo "<"."?xml version=\"1.0\" encoding=\"UTF-8\"?".">";
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>One Hundred Percent Height Divs</title>

        <![if IE]>
        <link rel="stylesheet" type="text/css" href="neki_mojga.css" />
        <![endif]>

        <![if !IE]>
        <link rel="stylesheet" type="text/css" href="neki_mojgaFF.css" />
        <![endif]>

    </head>

    <body>

        <div id="header">
        <table width="100%">
        <tr>
        <td bgcolor=lightgreen><a href=http://213.161.21.80:8080/milojko/finalplan2/admin/index.php?f=uredi><b>urejevalnik</b></a></td>
        <td bgcolor=lightblue ><a href=http://213.161.21.80:8080/milojko/finalplan2/admin/index.php?f=drevo><b>struktura</b></a></td>
        <td bgcolor=yellow    ><a href=http://213.161.21.80:8080/milojko/finalplan2/admin/index.php?sess=678529>Odjavi se</a></td>
        </tr>
        </table>
        </div>

        <div class="content">
        <?


    if ($GLOBALS[f] == "") {
        if ($_SESSION[tema] == "") {
                $_SESSION[tema] = "uredi";
            }
        } else {
                $_SESSION[tema] = $GLOBALS[f];
        }


    if ($_SESSION[tema] == "uredi") {
            include ("classes/commonclass.php");
                $obj=New commonclass;
                $obj->zacetna_stran();
        }

    else if ($_SESSION[tema] == "drevo") {
            include ("classes/drevo.php");
                $obj = New drevo;
                $obj->izpis(0);
        }
        ?>
        </div>

    </body>
</html>

index3.php sa obicnim html tagom radi.
http://213.161.21.80:8080/milojko/finalplan2/admin/index3.php

Code:

<?
session_start();
include ("protection/accesscontrol.php");
?>

<html>
    <head>
        <title>One Hundred Percent Height Divs</title>

        <![if IE]>
        <link rel="stylesheet" type="text/css" href="neki_mojga.css" />
        <![endif]>

        <![if !IE]>
        <link rel="stylesheet" type="text/css" href="neki_mojgaFF.css" />
        <![endif]>

    </head>

    <body>

        <div id="header">
        <table width="100%">
        <tr>
        <td bgcolor=lightgreen><a href=http://213.161.21.80:8080/milojko/finalplan2/admin/index.php?f=uredi><b>urejevalnik</b></a></td>
        <td bgcolor=lightblue ><a href=http://213.161.21.80:8080/milojko/finalplan2/admin/index.php?f=drevo><b>struktura</b></a></td>
        <td bgcolor=yellow    ><a href=http://213.161.21.80:8080/milojko/finalplan2/admin/index.php?sess=678529>Odjavi se</a></td>
        </tr>
        </table>
        </div>

        <div class="content">
        <?


    if ($GLOBALS[f] == "") {
        if ($_SESSION[tema] == "") {
                $_SESSION[tema] = "uredi";
            }
        } else {
                $_SESSION[tema] = $GLOBALS[f];
        }


    if ($_SESSION[tema] == "uredi") {
            include ("classes/commonclass.php");
                $obj=New commonclass;
                $obj->zacetna_stran();
        }

    else if ($_SESSION[tema] == "drevo") {
            include ("classes/drevo.php");
                $obj = New drevo;
                $obj->izpis(0);
        }
        ?>
        </div>

    </body>
</html>

HVALA UNAPRED!

Dusan

[ Ilija Studen @ 19.09.2004. 13:46 ] @

Header može da se pošalje samo pre nego što isprintaš nešto (sa print i echo). Znači, ne smeš printati NIŠTA pre nego što setuješ Cookie, šalješ specifičan header browseru ili startuješ sesije...

Pravila igre...

[ boccio @ 19.09.2004. 14:37 ] @

izbaci ovu liniju:

echo "<"."?xml version=\"1.0\" encoding=\"UTF-8\"?".">";

[ burtonium @ 19.09.2004. 16:02 ] @

Cao!

Hvala obojici na pomoci. Resio sam problem. Prilazem index2.php, kakav funkcionise.

;)

Code:

<?
session_start();
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>One Hundred Percent Height Divs</title>

        <![if IE]>
        <link rel="stylesheet" type="text/css" href="neki_mojga.css" />
        <![endif]>

        <![if !IE]>
        <link rel="stylesheet" type="text/css" href="neki_mojgaFF.css" />
        <![endif]>

    </head>

    <body>
<?
include ("protection/accesscontrol.php");
?>

        <div id="header">
        <table width="100%">
        <tr>
        <td bgcolor=lightgreen><a href=http://213.161.21.80:8080/milojko/finalplan2/admin/index.php?f=uredi><b>urejevalnik</b></a></td>
        <td bgcolor=lightblue ><a href=http://213.161.21.80:8080/milojko/finalplan2/admin/index.php?f=drevo><b>struktura</b></a></td>
        <td bgcolor=yellow    ><a href=http://213.161.21.80:8080/milojko/finalplan2/admin/index.php?sess=678529>Odjavi se</a></td>
        </tr>
        </table>
        </div>

        <div class="content">
        <?


    if ($GLOBALS[f] == "") {
        if ($_SESSION[tema] == "") {
                $_SESSION[tema] = "uredi";
            }
        } else {
                $_SESSION[tema] = $GLOBALS[f];
        }


    if ($_SESSION[tema] == "uredi") {
            include ("classes/commonclass.php");
                $obj=New commonclass;
                $obj->zacetna_stran();
        }

    else if ($_SESSION[tema] == "drevo") {
            include ("classes/drevo.php");
                $obj = New drevo;
                $obj->izpis(0);
        }
        ?>
        </div>

    </body>
</html>

Pozdrav,

dusan

[ webmaster1 @ 20.09.2004. 09:40 ] @

A postoje i funkcije za rad sa headerima!!Bas kako bi se izbegle ove i slicne neprijatnosti...Dakle, ne mora bas sve ici u kodu redom koji ce se izvrsavati...