(PHP 3>= 3.0.13, PHP 4 )
mcal_time_valid -- 
     Returns 
TRUE if the given hour, minutes and seconds is a valid time
    
Description
int 
mcal_time_valid ( int hour, int minutes, int seconds)
  
     mcal_time_valid() Returns TRUE if the given
     hour, minutes and seconds is a valid time, FALSE if not.