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php redirect problem (header) - whats wrong with my code

Answer 1

+5 A:

Because you've already sent HTML to the browser, the HTTP headers have been sent. This is why your error is "Cannot modify header information." Once you send any bytes past the headers, the HTTP headers can't be modified.

Try putting your PHP block before the HTML:

<?php
                  require_once 'db/db_functions.inc';
                  require_once 'functions/user_functions.inc';
                  require_once 'functions/string_functions.inc';
                  require_once 'functions/messages.inc';
                  require_once 'functions/login.inc';
                  $message_count = -1;
                  $messages = array();
                  if (!isset ($_POST['Submit']) || $_POST['Submit'] != 'Login'){
                        $login = $_POST['login'];
                        $password = $_POST['password'];
                        if ((do_login($login,  encrypt_password($password))) > 0){
                            header("dashboard");
                        }
                        else{
                            $message_count = 1;
                        }
                  }
    ?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;

simeonwillbanks 2010-10-06 17:25:28

Also an exit; after header();

daniels 2010-10-06 17:36:38

@simeonwillbanks, thanks it worked :D

sameera207 2010-10-07 03:50:39

Awesome, glad I could help.

simeonwillbanks 2010-10-07 16:08:31

Answer 2

+1 A:

You need to make sure that nothing is written to the browser before the header() call.

Also, if you are trying to redirect, the call should be: header('Location: url').

Rocket 2010-10-06 17:28:06

Answer 3

+1 A:

You can't send headers after sending HTML to the browser. An easy fix would be to add <? ob_start() ?> at the beginning of the file.

Pies 2010-10-06 17:28:36

Answer 4

A:

Try to Put :

              require_once 'db/db_functions.inc';
              require_once 'functions/user_functions.inc';
              require_once 'functions/string_functions.inc';
              require_once 'functions/messages.inc';
              require_once 'functions/login.inc';

These lines before the head tag and all those including and see if there is any extra spaces before and after the <% or %> tags of php then remove them i think it is happening because your sending header information again and again which is already sent by Head tag so whatever you want to include send that information before header is sent....!!

and it will be good if you will make a redirect_to() function and there you redirect to any page by using some if else and some indicators...!!

PhpSeeker 2010-10-06 18:08:24

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php redirect problem (header) - whats wrong with my code

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