(PECL event >= 1.2.6-beta)
Event::pending — Detects whether event is pending or scheduled
$flags
   
   )Detects whether event is pending or scheduled
flags
    
      One of, or a composition of the following constants:
      Event::READ
      ,
      Event::WRITE
      ,
      Event::TIMEOUT
      ,
      Event::SIGNAL
      .
     
   Returns TRUE if event is pending or scheduled. Otherwise FALSE.