(PECL event >= 1.2.6-beta)
EventBase::getFeatures — Returns bitmask of features supported
此函数没有参数。
Returns integer representing a bitmask of supported features. See EventConfig::FEATURE_* constants .
示例 #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";
($features & EventConfig::FEATURE_O1) and print "O1 - O(1) operation for adding/deleting events\n";
($features & EventConfig::FEATURE_FDS) and print "FDS - arbitrary file descriptor types, and not just sockets\n";
?>