PHP5中文手册·Get information about a process opened by proc_open -- 追寻梦想＞编程乐园＞PHP 编程

array proc_get_status ( resource $process )

proc_get_status() fetches data about a process opened using proc_open().

An array of collected information on success, and FALSE on failure. The returned array contains the following elements:

element	type	description
command	string	The command string that was passed to proc_open().
pid	int	process id
running	bool	`TRUE` if the process is still running, `FALSE` if it has terminated.
signaled	bool	`TRUE` if the child process has been terminated by an uncaught signal. Always set to `FALSE` on Windows.
stopped	bool	`TRUE` if the child process has been stopped by a signal. Always set to `FALSE` on Windows.
exitcode	int	The exit code returned by the process (which is only meaningful if running is `FALSE`). Only first call of this function return real value, next calls return -1.
termsig	int	The number of the signal that caused the child process to terminate its execution (only meaningful if signaled is `TRUE`).
stopsig	int	The number of the signal that caused the child process to stop its execution (only meaningful if stopped is `TRUE`).