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Bug #20271 Unable to set a cookie with _ in the host
Submitted: 2002-11-05 18:54 UTC Modified: 2002-11-06 05:39 UTC
Votes:3
Avg. Score:4.7 ± 0.5
Reproduced:3 of 3 (100.0%)
Same Version:3 (100.0%)
Same OS:3 (100.0%)
From: scottmacvicar at ntlworld dot com Assigned:
Status: Not a bug Package: Apache related
PHP Version: 4.3.0-pre2 OS: All
Private report: No CVE-ID: None
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From: scottmacvicar at ntlworld dot com
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 [2002-11-05 18:54 UTC] scottmacvicar at ntlworld dot com 
If you create a host with an underscore in the domain you are unable to set cookie. I created one with the name site_v1.domain.com and any attempt to set a cookie was unsuccessful, I then used the IP address instead and it worked fine.

I then tested this on a different system with the following code.

<?php

setcookie('name', 'value', time()+3600);

echo '<pre>';
print_r($_COOKIE);
echo '</pre>';

?>

Yes i did reload the page. I've tried php 4.2.3 and 4.3.0-pre2

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 [2002-11-06 05:39 UTC] msopacua@php.net 
Sorry, but your problem does not imply a bug in PHP itself.  For a
list of more appropriate places to ask for help using PHP, please
visit http://www.php.net/support.php as this bug system is not the
appropriate forum for asking support questions. 

Thank you for your interest in PHP.

Your nameserver is broken, see:
http://www.rfc-editor.org/rfc/std/std13.txt

Secion 3.5. Preferred name syntax, Page [10], shows allowed characters for hostnames. The underscore is not one of them.
 
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