(PECL event >= 1.2.6-beta)
EventConfig::requireFeatures — Enters a required event method feature that the application demands
$feature
) : boolEnters a required event method feature that the application demands
feature
Bitmask of required features. See EventConfig::FEATURE_* constants
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