proc_close — Close a process opened by proc_open() and return the exit code of that process.
Description
intproc_close
( resource$process
)
proc_close() is similar to pclose()
except that it only works on processes opened by
proc_open().
proc_close() waits for the process to terminate, and
returns its exit code. If you have open pipes to that process, you
should fclose() them prior to calling this function in
order to avoid a deadlock - the child process may not be able to exit
while the pipes are open.
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