Warning: session_start() [function.session-start]: Cannot send session cookie -

[colap]

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at index.php:1) in index.php on line 2

 

<?php
session_start();
$errorMessage = '';

if($submitted_by_user=$_POST['submitted_by_user']=='yes')
{
    echo "User: ".$submitted_by_user;
    include("database_connector.php");
    $user_id = $_POST['user_id'];
    //$password = $_POST['password'];
    $cmd=mysql_query("select * from student_personal where reg_no='$user_id'");
    if(!$cmd)

[PFMaBiSmAd]

Your file has been saved as a UTF-8 encoded file and the BOM (Byte Order Mark) characters that your editor placed at the start of the file is the content being output on line 1 of index.php (see the error message) that is preventing the headers from working.

 

Save the file as an ANSI/ASCII file or if you must save it as UTF-8, save it without the BOM characters.

[colap]

Your file has been saved as a UTF-8 encoded file and the BOM (Byte Order Mark) characters that your editor placed at the start of the file is the content being output on line 1 of index.php (see the error message) that is preventing the headers from working.

 

Save the file as an ANSI/ASCII file or if you must save it as UTF-8, save it without the BOM characters.

How would i save it as an ANSI/ASCII file?

[PFMaBiSmAd]

Look in your programming editor's file save choices.

[colap]

Look in your programming editor's file save choices.

That was written in Adobe Dreamweaver , now i'm editing with vim editor in linux.

What should i do now?