Problem with check cookie/post function

[JP128]

I get the problem

[code] PHP Warning:  Cannot modify header information - headers already sent by (output started at /usr/htdocs/config.php:49) in /htdocs/config.php on line 84
[/code]

and thats it.. here is my current script.
I showed what # the lines are... <-=-=-=-  ##  -=-=-=->
[code]
<?php
################### Database Connect #############
function dbConnect() { //Start of dbConnect
  mysql_connect("localhost", "*****", "********");
  mysql_select_db("*****");
}

################### User Auth ####################
function userAuth() {
  //Connect to the database.
  dbConnect(); // <-=-=-=- THIS IS LINE 49 -=-=-=->
  echo"Connected to database.<br>";
  //Check to see if the cookies are set.
  if((isset($_COOKIE['username']))&&(isset($_COOKIE['password']))){ //beginning of 2
      echo"The cookies are set.<br>";
    //Set the username, and password values because the cookie is set.
    $username = $_COOKIE['username']; // <-=-=-=- THIS IS LINE 84 -=-=-=->
    $password = $_COOKIE['password']; // <-=-=-=- THIS IS LINE 85 -=-=-=->
    echo"Cookie values added to the variables.";
    //Check the cookie variables against the registry table.
    $checkCookie = mysql_query("SELECT username,password FROM `registry` WHERE username='$username' AND password=md5('$password')");
    //Get the number of rows that $checkCookie looks up.
    $cookieRows = mysql_num_rows($checkCookie);
        if($cookieRows > 0){
        echo"That information exists in database!<br>";
            }else{
        echo"That information does not exist in database!<br>";
        //Show the login form because the cookie is invalid
        loginForm();
        exit;
            }
        }else{
      echo"That cookie doesn't exist. Checking to see if POST does...<br>";
      //Check to see if the username, and password are set because the cookies aren't.
        if((isset($_POST['username']))&&(isset($_POST['password']))){ // if POST
        echo"Post is in fact set.<br>";
        //Set the variables, because the POST is set.
        $username = $_POST['username'];
        $password = $_POST['password'];
        echo"Set the variables from POST<br>";
        //Check the POST variables against the table Registry.
        $checkPost = mysql_query("SELECT username,password FROM registry WHERE username='$username' AND password=md5('$password')");
        //Check on how many rows $checkPost looks up.
        $postRows = mysql_num_rows($checkPost);
            if($postRows > 0){
            echo"Those POST variables are in the database.<br>";
            setcookie("username",$username,time()+3600);
            setcookie("password",md5($password),time()+3600);
            echo"Set the cookie values...<br>";
              }else{
            echo"Showing Login form.<br>";
            loginForm();
            exit;
            }
        }
      }
  }
[/code]

I added all of the echo's in there to see how far it goes.
I don't know what is going on, and why it doesn't work. If someone could take a look at it, that would be great... I also searched around alot and saw tons of people with the whitespace problem, but I don't think that that is my problem.

[.josh]

you cannot have any html output before your setcookie function call.  no echos, no blank lines above your php tags, no nothing.  or you can look into [url=http://us2.php.net/ob_start]ob_start()[/url] if you need to have html output before it.

[JP128]

Ok, that is a new function to me... How would I use that in my script?

[JP128]

I have looked at php.net, and saw something like ob_start($buffer), but I don't know what that is... Could someone explain this function to me?

[.josh]

at the top of your script put ob_start(); at the bottom put ob_end_flush();

[JP128]

Now I get the error syntax error, unexpected T_STRING

[.josh]

repost your code.

[JP128]

[CODE]
<?php
function userAuth() {
ob_start();
//Connect to the database.
dbConnect();
echo"Connected to database.<br>";
//Check to see if the cookies are set.
if((isset($_COOKIE['username']))&&(isset($_COOKIE['password']))){ //beginning of 2
echo"The cookies are set.<br>";
//Set the username, and password values because the cookie is set.
$username = $_COOKIE['username'];
$password = $_COOKIE['password'];
echo"Cookie values added to the variables.";
//Check the cookie variables against the registry table.
$checkCookie = mysql_query("SELECT username,password FROM `registry` WHERE username='$username' AND password=md5('$password')");
Get the number of rows that $checkCookie looks up.
$cookieRows = mysql_num_rows($checkCookie);
if($cookieRows > 0){
echo"That information exists in database!<br>";
}else{
echo"That information does not exist in database!<br>";
//Show the login form because the cookie is invalid
loginForm();
exit;
}
}else{
echo"That cookie doesn't exist. Checking to see if POST does...<br>";
//Check to see if the username, and password are set because the cookies aren't.
if((isset($_POST['username']))&&(isset($_POST['password']))){ // if POST
echo"Post is in fact set.<br>";
//Set the variables, because the POST is set.
$username = $_POST['username'];
$password = $_POST['password'];
echo"Set the variables from POST<br>";
//Check the POST variables against the table Registry.
$checkPost = mysql_query("SELECT username,password FROM registry WHERE username='$username' AND password=md5('$password')");
//Check on how many rows $checkPost looks up.
$postRows = mysql_num_rows($checkPost);
if($postRows > 0){
$username = $_POST['username'];
$password = $_POST['password'];
setcookie("username",$username,time()+3600);
setcookie("password",md5($password),time()+3600);
echo"Those POST variables are in the database.<br>";
echo"Set the cookie values...<br>";
}else{
echo"Showing Login form.<br>";
loginForm();
exit;
}
}
}
ob_end_flush();
}
?>
[/CODE]

[.josh]

"Get the number of rows that $checkCookie looks up."

has no // before it

[JP128]

ok, but I still get the header problem.

[.josh]

okay, i see that you have ob_start() and ob_end_flush() inside a function, which means that the script you have provided is part of a larger script.  ob_start() has to be at the beginning of the entire script and ob_end_flush() has to be at the end of the entire script.

[JP128]

Still the same problem. I put it at the beginning of the file.

[.josh]

is your file being included into some other file? you need to put it in [i]that[/i] file.  The point is, it needs to be the very first thing php sees.

[JP128]

alright, i see. I no longer get the error... thanks. Now I just need to make sure the password is put into the db correctly.