EventConfig::requireFeatures

(PECL event >= 1.2.6-beta)

EventConfig::requireFeatures — Enters a required event method feature that the application demands

说明

public bool EventConfig::requireFeatures ( int $feature )

Enters a required event method feature that the application demands

参数

feature: Bitmask of required features. See EventConfig::FEATURE_* constants

返回值

范例

Example #1 EventConfig::requireFeatures() example

  <?php
$cfg  = new  EventConfig ();

 // Create event_base associated with the config
 $base  = new  EventBase ( $cfg );

 // Require FDS feature
 if ( $cfg -> requireFeatures ( EventConfig :: FEATURE_FDS )) {
    echo  "FDS feature is now requried\n" ;

     $base  = new  EventBase ( $cfg );
    ( $base -> getFeatures () &  EventConfig :: FEATURE_FDS )
        and print( "FDS - arbitrary file descriptor types, and not just sockets\n" );
}
 ?>

以上例程的输出类似于：

FDS feature is now requried
FDS - arbitrary file descriptor types, and not just sockets

参见

EventBase::getFeatures() - Returns bitmask of features supported