(PHP 4 >= 4.0.7, 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.
Параметр status - это переменная, переданная по ссылке в функцию pcntl_waitpid().
Returns TRUE if the child process which caused the return is currently stopped, FALSE otherwise.