PHP as a "daemon" or very long running process?

hello all, I really like PHP the language. so much so that i would like to convert some of my C/C++ daemons and very long running processes (not really daemons in that they don't sit on a socket, but they monitor files and should never die except when the system is shutting down) to PHP. has anyone done this and had any problems? i'm aware that the memory cost will certainly be higher. i can deal with that. i'm aware that the CPU cost will also be higher. I don't mind that since these will be IO bound, not CPU bound. mainly i'm concerned about issues of stability. are there any gotchas? might there be problems with garbage collection (does memory use increase indefinitely? or are unreferenced variables garbage collected well enough that i don't need to worry about this)? naturally i'll need to set max_execution_time... that's not a big deal. tiger -- Gerald Timothy Quimpo tiger@kami.com http://members.xoom.com/TigerQuimpo entia non sunt multiplicanda veritas liberabit vos praetere necessitatem mene sakhet ur-seveh