Possible resource leak?

Hello,

I don't believe this to be a php-general question, and seems more like a
bug, but I'm soliciting opinions before posting it as such. It DOES
seem like an internals problem, but I could be wrong, and if I am,
please explain why.

See the attached code; it has been isolated from PEAR (core) and
PEAR::Net_Socket.

Basically, after a certain number of iterations (Linux, PHP4.3.4 and
4.3.6RC3, maybe others), PHP runs out of file resources.

Warning: fsockopen(): unable to connect to 192.168.100.51:80 in
/home/sean/www/dev3/crashing_resources.php on line 51
ERROR: 24 - Too many open files

This SEEMS to be a leak (file handles are never closed?) in
method_exists, get_classname or get_parent_classname, because if I
remove the ShrunkenPEAR constructor (OR, the _ShrunkenPEAR method), the
code does not fail.

Additionally, if I instanciate ShrunkenSocket as $sock = new
ShrunkenSocket() (value instead of reference), the error is also absent.
The reason I'm using a reference: PEAR::HTTP_Request instanciates
Net_Socket as such.

Also, as mentioned in a comment in the code, if I change the die to an
echo, the script segfaults after ~65535 iterations (which seems like an
overflow problem).

Any insight? I'm happy to post this as a bug (or move this to the PEAR
list) if it is such.

S