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