how to supress/avoid header related warning

[mintoo2cool]

i have a file connection.php, that contains functions to connect and disconnect from database.

 

the functions are as follows:

<?php
//connection.php file
function connect()
{
  $con = mysql_connect("localhost","abcd","123456");
  if(!$con)
    die ('Error! could not connect to data to add data');
  return $con;
}
function disconnect($con)
{
   mysql_close($con);
}

?>

 

I my intent is to use these functions whenever i would need to connect to database.

 

When i include this file, using include() or require(). I get the warning message, and the page does not redirect to the next page.

 

For example I have created a login page that accepts username and password. The data from this form is "processed" in a login_proc.php file, that redirects the browser to home.php or loginerror.php. But instead of working as I desire, PHP stops with a warning stating the following.

Warning: Cannot modify header information - headers already sent by (output started at /home1/mintoo/public_html/bew_system/login_proc.php:5) in /home1/mintoo/public_html/bew_system/login_proc.php on line 20

 

How do I avoid this warning?

 

This is the code in login_proc.php for your reference

<?php
//login_proc.php
include 'resources/connection.php';
$con= connect();
ob_flush();
$uname = mysql_real_escape_string(strip_tags(substr($_POST['uname'],0,30)));
$pass = mysql_real_escape_string(strip_tags(substr($_POST['pwd'],0,30)));
$query = "select userid from mintoo_db1.tbl_users where userid='$uname' and password='$pass'";
$result = mysql_query($query);
$nofrows = mysql_num_rows($result);
disconnect($con);
if($nofrows == 0)
echo '<h2>Incorrect Username or Password</h2><br/><a href="login.php">Try again</a>';
else if($nofrows == 1)	
header("location: home.php");
else
echo '<h2><u> Error-001:</u>An unexpected error has occured. Please go back and try again after some time or contact system administrator</h2>';
?>

 

 

EDIT: Solved it

 

Made the following changes to login_proc.php

<?php
ob_start();
include 'resources/connection.php';
$con= connect();


$uname = mysql_real_escape_string(strip_tags(substr($_POST['uname'],0,30)));
$pass = mysql_real_escape_string(strip_tags(substr($_POST['pwd'],0,30)));
$query = "select userid from mintoo_db1.tbl_users where userid='$uname' and password='$pass'";

$result = mysql_query($query);
$nofrows = mysql_num_rows($result);
disconnect($con);
if($nofrows == 0)
echo '<h2>Incorrect Username or Password</h2><br/><a href="login.php">Try again</a>';
else if($nofrows == 1)
{

	header("location: home.php");

}
else
echo '<h2><u> Error-001:</u>An unexpected error has occured. Please go back and try again after some time or contact system administrator</h2>';
ob_flush();
?>

[trq]

You must have missed this: http://www.phpfreaks.com/forums/index.php?topic=37442.0