how can i stop mcrypt modifying headers???

[PHPGeek80]

Hi,

 

I have one index.php file that adds and gets data from a mysql database.

 

Within this file i have an include statement:

 

include("include/mcrypt-functions.php");

 

where "mcrypt-functions.php" is the following:

 

<?php

function funct_encrypt($data)
{
$key = "fuvBUcutvIVbiuvuv";

$iv_size = mcrypt_get_iv_size(MCRYPT_XTEA, MCRYPT_MODE_ECB);
$iv      = mcrypt_create_iv($iv_size, MCRYPT_RAND);
$enc     = mcrypt_encrypt(MCRYPT_XTEA, $key, $data, MCRYPT_MODE_ECB, $iv);

return $encrypted;
}

function funct_decrypt($data)
{
$key = "fuvBUcutvIVbiuvuv";

$iv_size = mcrypt_get_iv_size(MCRYPT_XTEA, MCRYPT_MODE_ECB);
$iv      = mcrypt_create_iv($iv_size, MCRYPT_RAND);
$dec     = mcrypt_decrypt(MCRYPT_XTEA, $key, $data, MCRYPT_MODE_ECB, $iv);

return $decrypted;
}


?> 

 

after i add or get data from the database i redirect back to the main page using:

 

header('Location: index.php?p=viewall');

 

but when i do this i get a message like this:

 

Warning: Cannot modify header information - headers already sent by (output started at /home/*****/public_html/links/include/mcrypt-functions.php:24) in /home/*****/public_html/links/index.php on line 168

 

This message stops the page drom redirecting successfully and i get a blank page with the warning.

 

How can i stop this error?

 

Thanks.

[beaux1]

http://www.phpfreaks.com/forums/index.php/topic,37442.0.html

[PHPGeek80]

Thanks beaux1.

 

Added the output buffering to the start and end of the file ehich now works a treat.

 

Is it best to add buffering to every php file?

[artacus]

You shouldn't need ob for this.

 

Make sure there are absolutely no characters before your opening <?php tag and none after your closing ?> tag.