(PECL event >= 1.2.6-beta)
EventBase::getTimeOfDayCached — Returns the current event base time
public EventBase::getTimeOfDayCached ( ) : float
 On success returns the current time(as returned by gettimeofday() ), looking at the cached value in base if possible, and calling gettimeofday() or clock_gettime() as appropriate if there is no cached time. 
This function has no parameters.
 Returns the current event base time. On failure returns null. 
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    https://www.php.net/manual/en/eventbase.gettimeofdaycached.php