(PECL ev >= 0.2.0)
EvStat::set — Configures the watcher
$path
   
   , 
    double
     $interval
   
   )Configures the watcher.
path
    The path to wait for status changes on.
interval
    
      Hint on how quickly a change is expected to be detected and should
      normally be specified as
      0.0
      to let
      libev
      choose a suitable value.
     
No value is returned.