EventBase::getFeatures

(PECL event >= 1.2.6-beta)

EventBase::getFeatures — Returns bitmask of features supported

说明

public int EventBase::getFeatures ( void )

Returns bitmask of features supported.

参数

此函数没有参数。

返回值

Returns integer representing a bitmask of supported features. See EventConfig::FEATURE_* constants .

范例

Example #1 EventBase::getFeatures() example

  <?php
 // Avoiding "select" method
 $cfg  = new  EventConfig ();
if ( $cfg -> avoidMethod ( "select" )) {
    echo  "`select' method avoided\n" ;
}

 $base  = new  EventBase ( $cfg );

echo  "Features:\n" ;
 $features  =  $base -> getFeatures ();
( $features  &  EventConfig :: FEATURE_ET ) and print( "ET - edge-triggered IO\n" );
( $features  &  EventConfig :: FEATURE_O1 ) and print( "O1 - O(1) operation for adding/deletting events\n" );
( $features  &  EventConfig :: FEATURE_FDS ) and print( "FDS - arbitrary file descriptor types, and not just sockets\n" );
 ?>

参见

EventBase::getMethod() - Returns event method in use
EventConfig