php error

[Pst]

Hallo,

Ik heb een login/register/account beheer systeem via een tutorial toegevoegt

maar nu waren het kale pagina's(wit)

Nu heb ik alles tussen mijn style gezet zodat het op de pagina zelf lijkt

Maar nu krijg ik in eens deze error(die ik daarvoor nog niet had)

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /public/sites/www.kereltj33.com/website/login/main.php:10) in /public/sites/www.kereltj33.com/website/login/include/session.php on line 47

Dit is mijn sesson.php:

<?
include("include/session.php");

class Process
{
  /* Class constructor */
  function Process(){
     global $session;
     /* User submitted login form */
     if(isset($_POST['sublogin'])){
        $this->procLogin();
     }
     /* User submitted registration form */
     else if(isset($_POST['subjoin'])){
        $this->procRegister();
     }
     /* User submitted forgot password form */
     else if(isset($_POST['subforgot'])){
        $this->procForgotPass();
     }
     /* User submitted edit account form */
     else if(isset($_POST['subedit'])){
        $this->procEditAccount();
     }
     /**
      * The only other reason user should be directed here
      * is if he wants to logout, which means user is
      * logged in currently.
      */
     else if($session->logged_in){
        $this->procLogout();
     }
     /**
      * Should not get here, which means user is viewing this page
      * by mistake and therefore is redirected.
      */
      else{
         header("Location: main.php");
      }
  }

  /**
   * procLogin - Processes the user submitted login form, if errors
   * are found, the user is redirected to correct the information,
   * if not, the user is effectively logged in to the system.
   */
  function procLogin(){
     global $session, $form;
     /* Login attempt */
     $retval = $session->login($_POST['user'], $_POST['pass'], isset($_POST['remember']));

     /* Login successful */
     if($retval){
        header("Location: ".$session->referrer);
     }
     /* Login failed */
     else{
        $_SESSION['value_array'] = $_POST;
        $_SESSION['error_array'] = $form->getErrorArray();
        header("Location: ".$session->referrer);
     }
  }

  /**
   * procLogout - Simply attempts to log the user out of the system
   * given that there is no logout form to process.
   */
  function procLogout(){
     global $session;
     $retval = $session->logout();
     header("Location: main.php");
  }

  /**
   * procRegister - Processes the user submitted registration form,
   * if errors are found, the user is redirected to correct the
   * information, if not, the user is effectively registered with
   * the system and an email is (optionally) sent to the newly
   * created user.
   */
  function procRegister(){
     global $session, $form;
     /* Convert username to all lowercase (by option) */
     if(ALL_LOWERCASE){
        $_POST['user'] = strtolower($_POST['user']);
     }
     /* Registration attempt */
     $retval = $session->register($_POST['user'], $_POST['pass'], $_POST['email']);

     /* Registration Successful */
     if($retval == 0){
        $_SESSION['reguname'] = $_POST['user'];
        $_SESSION['regsuccess'] = true;
        header("Location: ".$session->referrer);
     }
     /* Error found with form */
     else if($retval == 1){
        $_SESSION['value_array'] = $_POST;
        $_SESSION['error_array'] = $form->getErrorArray();
        header("Location: ".$session->referrer);
     }
     /* Registration attempt failed */
     else if($retval == 2){
        $_SESSION['reguname'] = $_POST['user'];
        $_SESSION['regsuccess'] = false;
        header("Location: ".$session->referrer);
     }
  }

  /**
   * procForgotPass - Validates the given username then if
   * everything is fine, a new password is generated and
   * emailed to the address the user gave on sign up.
   */
  function procForgotPass(){
     global $database, $session, $mailer, $form;
     /* Username error checking */
     $subuser = $_POST['user'];
     $field = "user";  //Use field name for username
     if(!$subuser || strlen($subuser = trim($subuser)) == 0){
        $form->setError($field, "* Username not entered<br>");
     }
     else{
        /* Make sure username is in database */
        $subuser = stripslashes($subuser);
        if(strlen($subuser) < 5 || strlen($subuser) > 30 ||
           !eregi("^([0-9a-z])+$", $subuser) ||
           (!$database->usernameTaken($subuser))){
           $form->setError($field, "* Username does not exist<br>");
        }
     }

     /* Errors exist, have user correct them */
     if($form->num_errors > 0){
        $_SESSION['value_array'] = $_POST;
        $_SESSION['error_array'] = $form->getErrorArray();
     }
     /* Generate new password and email it to user */
     else{
        /* Generate new password */
        $newpass = $session->generateRandStr(8);

        /* Get email of user */
        $usrinf = $database->getUserInfo($subuser);
        $email  = $usrinf['email'];

        /* Attempt to send the email with new password */
        if($mailer->sendNewPass($subuser,$email,$newpass)){
           /* Email sent, update database */
           $database->updateUserField($subuser, "password", md5($newpass));
           $_SESSION['forgotpass'] = true;
        }
        /* Email failure, do not change password */
        else{
           $_SESSION['forgotpass'] = false;
        }
     }

     header("Location: ".$session->referrer);
  }

  /**
   * procEditAccount - Attempts to edit the user's account
   * information, including the password, which must be verified
   * before a change is made.
   */
  function procEditAccount(){
     global $session, $form;
     /* Account edit attempt */
     $retval = $session->editAccount($_POST['curpass'], $_POST['newpass'], $_POST['email']);

     /* Account edit successful */
     if($retval){
        $_SESSION['useredit'] = true;
        header("Location: ".$session->referrer);
     }
     /* Error found with form */
     else{
        $_SESSION['value_array'] = $_POST;
        $_SESSION['error_array'] = $form->getErrorArray();
        header("Location: ".$session->referrer);
     }
  }
};

/* Initialize process */
$process = new Process;

?>

Ik kan er maar niet achterkomen wat er verkeerd gegaan is

Zou iemand mij hierbij kunnen helpen?

[leroy]

De error headers already sent komt omdat er voor het commando header() html code staat.

Boven de headers mag totaal geen html komen te staan. Anders krijg je deze foutmelding.

Zo te zien in het script wordt het commando header() gebruikt om de gebruiker naar een andere pagina te sturen. Wat je hier ook voor kan gebruiken is een stukje javascript. Alleen is dit niet goed in gebruik omdat er dan een deel door de browser en een deel door de server wordt afgehandeld.

Het header() commando zou je dan moeten vervangen door het volgende stukje javascript

<script language="javascript">
document.location.href = <<locatie>>
</script>

<<locatie>> moet dan de php code worden die achter "Location:" staat in het header() commando.

Dat is het enige wat je zou kunnen proberen OF, er voor moeten zorgen dat deze class wordt uitgevoerd voordat er html code wordt uitgevoerd.

Groeten,

Leroy

[Pst]

Sorry maar het probleem is al opgelost

Hij vroeg om de cookies die hij niet kon starten die moest ik dus starten dus moest ik dit er in plaatsen:

<?php session_start(); ?>

en dat werkte

[leroy]

Dat kan inderdaad ook één van de redenen zijn waarom hij die melding geeft ja. Even niet over nagedacht haha.

Groeten,

Leroy