PHPSESSID behavour not possible on Ubuntu?

Does anyone know if Ubuntu have permanently killed or broken support for session.use_trans_sid?

I'm working on a project that requires the PHPSESSID appended to each URL (can't change this, unfortunately).

For some reason, I can't get this working on Ubuntu (Ubuntu 10.10, PHP 5.3.3-1ubuntu9.5). However, it does work on CentOS (CentOS 5.6 , PHP 5.3.6).

Here is the test code:

phpinfo();
ini_set('session.开发者_运维知识库use_trans_sid', true);
ini_set('session.use_cookies', false);
ini_set('session.use_only_cookies', false);
ini_set('arg_separator.output','&');
ini_set("url_rewriter.tags","a=href,area=href,frame=src");
session_start();
echo '<a href="/foo">test<?a>';
exit;

On CentOS, the link is correctly output with PHPSESSID on the end, but not Ubuntu. I'd rather not port my whole development environment for this project over if I can avoid it. ;)

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Your example seems to work in Ubuntu 11 (Ubuntu 11.04, PHP 5.3.5-1ubuntu7.2). Test page here: http://test.nik.mt-dev.co.uk/sessiontest.php