PHP Session fails on sub-domains

PHP Session fails on sub-domains

search resultshtml - PHP Session fails on sub-domains - Stack Overflow
So I had a login/session system set up that worked perfectly for a good
while. However, within the last few days the sessions fail to carry to the
sub-domains.
stackoverflow.com/.../php-session-fails-​on-sub-domains - Cached

apache - Allow php sessions to carry over to subdomains ...
I use php sessions (not cookies, except for session id cookie) ...
Unfortunately all 3 failed to work, ... persistent PHP session across
subdomains. 0.
stackoverflow.com/questions/644920 - Cached

Problem with session data across subdomains and protocols ...
Ready for this one, everyone? I'm having a problem accessing a PHP session
across subdomains. I have a Linux/Apache server running PHP 4.3.2 with one
domain on it.
www.experts-exchange.com/.../PHP/Q_​21141570.html
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Building a php session based authentication system for a custom web app.
... php session subdomain cross-domain Topics PHP Scripting Language, PHP
and Databases
www.experts-exchange.com/.../PHP/Q_​24424711.html

PHP: session_set_cookie_params - Manual
As PHP's Session Control does not ... So to make all your cookies be
available across all sub-domains ... I switched to this after having many
failed attempts at ...
uk.php.net/manual/en/function.session-​set-cookie-params.php - Cached

Re: Session handling, login across all subdomains
To get them to work with all of your subdomains, in your php.ini file set
session.cookie_domain = .example.com where example.com is your main
domain.
coding.derkeiler.com/Archive/PHP/​comp.lang.php/2008-08/... - Cached

Using PHP sessions across subdomains | Epigroove
By default, PHP uses the 'PHPSESSID' cookie to propagate session data
across multiple pages, and by default it uses the current top-level domain
and subdomain in the ...
www.epigroove.com/blog/using-php-​sessions-across-subdomains - Cached

PHP :: Bug #2937 :: session_start() fails when used after ...
session_start() fails when used after require() or include() Submitted:
1999-12-08 14:06 UTC: Modified: 1999-12-10 06:11 UTC: From: ... sas at cvs
dot php dot net
bugs.php.net/?id=2937 - Cached

Bug: Migrate site from 9.x to 10.x, subdomains can't use PHP ...
Bug: Migrate site from 9.x to 10.x, subdomains can't use PHP session with
FastCGI; ... stderr: PHP Warning: Unknown: Failed to write session data
(files).
forum.parallels.com/​showthread.php?112599-Bug-Migrate... - Cached

madCarrot - Pass Sessions between subdomains in php
If you want to be able to pass session data between subdomains you need to
add the following to the php.ini file. session.cookie_domain =
.mydomain.com
www.madcarrot.co.uk/2005/08/pass_​sessions_b.html - Cached