what is causing the "headers already exist" message

[bopritchard]

what in this file is causing the "headers already exist" message?


contents of login.php
<?
include ("config.inc.php");
$username=$_POST['username'];
$password=$_POST['password'];

mysql_connect( "$hostname", "$dbusername", "$dbpassword")
or die ("Unable to connect to server.");
mysql_select_db("$db_name")
or die ("Unable to select database.");
$sql = "SELECT *
FROM users
WHERE username='$username' and password='$password'";
$result = mysql_query($sql)
or die ("Unable to get results.");
$num = mysql_numrows($result)
or die ("You're not authorized to be here. If you feel you have recieved this
message in error, please contact the <a
href=\"mailto:bopritchard@mindspring.com\">webmaster</a>");
if ($num == 1) {
$row = mysql_fetch_row ($result);
$id=$row[0];
session_start();
$_SESSION['userid'] = 'crap';
$_SESSION['otauth'] = 'no';
print "$id";
echo "Your username is $username</p>";
}
?>

contents of config.inc.php
<?php
$dbusername = "asdfasdfasdf"; //Database Username
$dbpassword = "adfasdfsdaf"; //Database password
$db_name = "asdfasdfsadf"; //Database name
$hostname= "asdfasdfasdf";
?>

 

[chessbot]

Is your message "headers already sent"? Then check that there is no white space before the <? in either file and that there is none after ?> in config. Also check that you aren't echoing anything before the session_start().

--Chessbot

"Violence is the last refuge of the incompetent." -- Asimov, Foundation

 

[bopritchard]

it was whitespace...thanks

 

[cs7536]

config.inc.php page:

<?
//enter the username and password that conncts you to the database "localhost is normally ok to keep as is"
$db = @mysql_connect( "localhost", "user", "password")
or die ("Unable to connect to server.");

//enter the name of the database that you are attempting to connect 2
@mysql_select_db("name_of_database", $db)
or die ("Unable to select database.");
?>



page 2:

<?php
//when you include now to the connection you only have to make this connection one time and it reads easier
include ("conn.php");

$username = $_POST['username'];
$password = $_POST['password'];

/*consider making the usernames unique instead of having to type the username
and password to login, there should not be 2 users with the same username anyways */
$result = @mysql_query("SELECT *
FROM users
WHERE username = '$username'");

//make sure that you always look at your code right for example: mysql_num_rows not mysql_numrows
$num = @mysql_num_rows($result);

if(!$num){
echo "You're not authorized to be here. If you feel you have recieved this message in error,
please contact the <a href='mailto:bopritchard@mindspring.com'>webmaster</a>";
}else{
if ($num == 1) {
$row = @mysql_fetch_row ($result);
$id = $row[0];
session_start();
$_SESSION['userid'] = 'crap';
$_SESSION['otauth'] = 'no';
//also stay consistant with your choice of print or echo although it still works it reads better
echo $id;
echo "Your username is $username</p>";
}
}
?>

good luck with your project

Nothing is hard when you realy want to learn it.

Max

 

[cs7536]

make sure that you add the: <?php at the start of the code

<?php
//enter the username and password that conncts you to the database "localhost is normally ok to keep as is"
$db = @mysql_connect( "localhost", "user", "password")
or die ("Unable to connect to server.");

//enter the name of the database that you are attempting to connect 2
@mysql_select_db("name_of_database", $db)
or die ("Unable to select database.");
?>

Nothing is hard when you realy want to learn it.

Max