Suitable for PEAR: A PHP4 implementation of Pearl's IPC::Open3

Hello I struggeled for several hours solving the problem to write a IPC::Open3 function I knew from Perl which was capable to do a popen(), write on its stdin and read both, stdout *and* stderr with arbitrary amount of data and order of input/output. Looking at the result it's only ~100 lines of code but a newbie would fail here or even worse it would work first but suddenly stop for certain called programs or data >4kb... So I now wonder if this function would be welcomed to PEAR. bye, -christian- [background for those not knowing the problems of blocking pipes] Pipes to programs are implemented in the kernel as normally 4kb big buffers to which both programs are connected. fread e.g. is now a so- called blocking system calls that simply stops until either the pipe is closed by the remote end via fclose or if data is available. Sames goes for fwrite which sleeps if the 4kb buffer is full until the other side empties it. Imagine now one side tries to write 10kb to stdout and the other side tries to read from stderr -> deadlock. Using proc_open() and stream_select() one can work around this deadlock but I found no example for reading stdout and stderr on the web.