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<?php
namespace React\EventLoop;
/**
* The `Factory` class exists as a convenient way to pick the best available event loop implementation.
*/
final class Factory
{
/**
* Creates a new event loop instance
*
* ```php
* $loop = React\EventLoop\Factory::create();
* ```
*
* This method always returns an instance implementing `LoopInterface`,
* the actual event loop implementation is an implementation detail.
*
* This method should usually only be called once at the beginning of the program.
*
* @return LoopInterface
*/
public static function create()
{
// @codeCoverageIgnoreStart
if (class_exists('libev\EventLoop', false)) {
return new ExtLibevLoop();
} elseif (class_exists('EvLoop', false)) {
return new ExtEvLoop();
} elseif (class_exists('EventBase', false)) {
return new ExtEventLoop();
} elseif (function_exists('event_base_new') && PHP_VERSION_ID < 70000) {
// only use ext-libevent on PHP < 7 for now
return new ExtLibeventLoop();
}
return new StreamSelectLoop();
// @codeCoverageIgnoreEnd
}
}
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