(PHP 4 >= 4.1.0, PHP 5, PHP 7)
pcntl_wexitstatus — Returns the return code of a terminated child
$status
   ) : int
   Returns the return code of a terminated child.  This function is
   only useful if pcntl_wifexited() returned
   TRUE.
  
statusEl parámetro status
es el parámetro de estado proporcionado a una correcta
llamada a pcntl_waitpid().
Returns the return code, as an integer.