(PECL event >= 1.2.6-beta)
EventConfig::requireFeatures — Enters a required event method feature that the application demands
public EventConfig::requireFeatures ( int $feature ) : bool
Enters 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"); } ?>
The above example will output something similar to:
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https://www.php.net/manual/en/eventconfig.requirefeatures.php