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Libevent Functions
PHP Manual

# event_base_priority_init

(PECL libevent >= 0.0.2)

event_base_priority_init — Set the number of event priority levels

### Description

bool event_base_priority_init ( resource `$event_base` , int `$npriorities` )

Sets the number of different event priority levels.

By default all events are scheduled with the same priority (`npriorities`/2). Using event_base_priority_init() you can change the number of event priority levels and then set a desired priority for each event.

### Parameters

`event_base`

  Valid event base resource.

`npriorities`

  The number of event priority levels.

### Return Values

event_base_priority_init() returns `TRUE` on success or `FALSE` on error.

event_base_new
event_base_reinit
Libevent Functions
PHP Manual