(PHP 4 >= 4.1.0, PHP 5)
pcntl_wifstopped — Checks whether the child process is currently stopped
Checks whether the child process which caused the return is currently stopped; this is only possible if the call to pcntl_waitpid() was done using the option WUNTRACED.
The status parameter is the status parameter supplied to a successful call to pcntl_waitpid().
Returns TRUE if the child process which caused the return is currently stopped, FALSE otherwise.