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(PECL ev >= 0.2.0)
EvLoop::signal — Creates EvSignal watcher object associated with the current event loop instance
$signum
, callable $callback
[, mixed $data
= NULL
[, int $priority
= 0
]] )Creates EvSignal watcher object associated with the current event loop instance
All parameters have the same meaning as for EvSignal::__construct()
Returns EvSignal object on success