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Asked: 2026-05-15T23:48:56+00:00

my index.php page code is- <?php if(!$_COOKIE[‘authorized’] == 1) { header(Location: login.php); } ?>

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my index.php page code is- 

<?php

if(!$_COOKIE['authorized'] == 1) {
header("Location: login.php");
}

?>


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org   /TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>My Photo Website</title>
<script src="js/jquery-1.2.6.pack.js" type="text/javascript"></script>
<script src="js/jquery.lightbox-0.5.pack.js" type="text/javascript"></script>
<script src="js/myscript.js" type="text/javascript"></script>
<link rel="stylesheet" href="css/default.css" />
<link rel="stylesheet" href="css/jquery.lightbox-0.5.css" />


</head>
<body>
<form method="post" action="changePhotoTitle.php">
<div id="container">
<h1>My Photos <small>click on the text to change the title.</small></h1>
<a href="login.php?logout=1" id="logout">logout</a>

<div id="main">

<?php require 'getPhotos.php'; ?>

<div id="response" class="hidden" />
</div><!-- end main-->

</div><!-- end container-->
</form>
</body>
</html>

my database.php page code is- 

<?php

$db_name = "db";
$db_server = "localhost";
$db_user = "root";
$db_pass = "";

$mysqli = new MySQLi($db_server, $db_user, $db_pass, $db_name) or die(mysqli_error());

?>

but followong warning message is coming-
Warning: Cannot modify header information – headers already sent by (output started at C:\xampp\htdocs\pics\index.php:1) in C:\xampp\htdocs\pics\index.php on line 4

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1 Answer

  1. Editorial Team

    Quoting from the Wikipedia entry for BOM:

    Byte order mark

    Many Windows programs (including
    Windows Notepad) add the bytes 0xEF,
    0xBB, 0xBF at the start of any
    document saved as UTF-8. This is the
    UTF-8 encoding of the Unicode byte
    order mark (BOM), and is commonly
    referred to as a UTF-8 BOM even though
    it is not relevant to byte order. The
    BOM can also appear if another
    encoding with a BOM is translated to
    UTF-8 without stripping it.

    The presence of the UTF-8 BOM may cause interoperability problems with
    existing software that could otherwise handle UTF-8, for example:

    + Older text editors may display the BOM as “” at the start of the document, even if the UTF-8 file contains only ASCII and would otherwise display correctly.
    + Programming language parsers can often handle UTF-8 in string constants and comments, but cannot parse the BOM at the start of the file.

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