You may have already looked at this, but both Perl and PHP support Apache notes, which allows you to pass data (structures) between handlers. From the mod_perl guide:
in reply to Sharing data structures among http processes?
Let's say that you wrote a few handlers to process a request, and they all need to share some custom Perl data structure. The pnotes() method comes to your rescue.
I've been meaning to play with it for a while, but haven't gotten around to it yet. It sure looks cool ;)
The handler prepares the data in hash %my_data and calls pnotes() method to store the data internally for other handlers to re-use. All the subsequently called handlers can retrieve the stored data in this way:
# a handler that gets executed first
my %my_data = (foo => 'mod_perl', bar => 'rules');
$r->pnotes('my_data' => \%my_data);
my $info = $r->pnotes('my_data');
The stored information will be destroyed at the end of the request.
[ ar0n ]
update: Hrm, I guess I misunderstood the question. Sorry 'bout that.