Re: Warning: session_start()

Thanks for all your suggestions such as removing whitespace before the <?php tag and commenting issues. I made those changes. I didn't realize that connecting to the MySQL database involved sending a header: eg. mysql_connect($host, $user, $mysql_pass); Does this mean this mysql_connect statement should go before the <html> tag - even though mysql_connect is part of my conditional statement for logging in? (code is below) I primarily solved the header problem on my login page with a simple replacement. I used this line: echo '<script language="javascript">location.href="first_page.php"</script>'; Instead of: header ("Location: first_page.php"); And the page redirected :) However, I'm still experiencing issues with session_start() -- once the user's login password has been verified, the session begins and their session ID is saved as a variable -- this process takes place in the middle of the code, after the header. I can't put this right at the beginning of the code. In this case, from what I understand, I should use output buffering? Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home2/myparcoa/public_html/index.php:10) in /home2/myparcoa/public_html/includes/login_form.php on line 32 Thanks again for the insights. On Wed, May 18, 2011 at 2:54 PM, Andre Polykanine <andre@oire.org> wrote: > Hello Nazish, > > Try to delete your HTML comments before the <?php starting tag. So > remove *anything* before <?php. > > -- > With best regards from Ukraine, > Andre > Skype: Francophile > My blog: http://oire.org/menelion (mostly in Russian) > Twitter: http://twitter.com/m_elensule > Facebook: http://facebook.com/menelion > > ------------ Original message ------------ > From: Nazish <nazish@jhu.edu> > To: php-general@lists.php.net > Date created: , 9:15:37 PM > Subject: [PHP] Warning: session_start() > > > Hi everyone, > > I recently uploaded my website files to a server. When I tried to log into > my website, I received these error messages: > > *Warning*: session_start() > > [function.session-start<http://www.myparcoasis.com/function.session-start > >]: > Cannot send session cookie - headers already sent by (output started at > /home2/myparcoa/public_html/index.php:10) in * > /home2/myparcoa/public_html/includes/login_form.php* on line *33* > > *Warning*: session_start() > > [function.session-start<http://www.myparcoasis.com/function.session-start > >]: > Cannot send session cache limiter - headers already sent (output started at > /home2/myparcoa/public_html/index.php:10) in * > /home2/myparcoa/public_html/includes/login_form.php* on line *33* > > *Warning*: Cannot modify header information - headers already sent by > (output started at /home2/myparcoa/public_html/index.php:10) in* > /home2/myparcoa/public_html/includes/login_form.php* on line *36* > * > * > > The website worked fine on the Apache localhost server (I could log in), so > I'm not sure what's wrong with the code which is creating the error on the > online server. Any ideas? I've highlighted the two error lines (31 & 34). > I'd appreciate any insight! Thnx! > > > <!----------------------------------------------------------------------- > WHEN USER CLICKS 'ENTER' TO LOGIN > <!------------------------------------------------------------------------> > <?php > > $submit = ($_POST['submit']); > > if ($submit) // If user clicks the 'ENTER' button to login > { > // Connect to server and select database > include ("includes/mysql_connect.inc"); > include ("includes/connect_res_directory.php"); > > // define login variables > $login = mysql_real_escape_string($_POST['login']); > $password = mysql_real_escape_string($_POST['password']); > > $check_login = mysql_query("SELECT * FROM unit_info > WHERE login = '$login' > AND password = '$password'"); > > $data = mysql_fetch_assoc($check_login); > > // Are all the fields filled? > if($login && $password) > { > // If fields are entered, verify username and password in mysql > database > if (mysql_num_rows($check_login)) // If the login and password > exists > { > //Login > * session_start();* > $_SESSION ['login'] = $data['login']; > > * header ("Location: index_test.php"); // webpage for correct > login* > > exit; > } > else > { > // Invalid username/password > echo "<div class='alert'>The username or password you entered > is > incorrect.</div>"; > } > } > else > echo "<div class='alert'>Please enter all the > fields!</div>"; > > } > > ?> > >