(PECL libevent >= 0.0.2)
event_base_priority_init — Set the number of event priority levels
Sets the number of different event priority levels.
By default all events are scheduled with the same priority
Using event_base_priority_init() you can change the number
of event priority levels and then set a desired priority for each event.
Valid event base resource.
The number of event priority levels.
TRUE on success or
FALSE on error.