/**
* Get a available updater instance, or returns NULL is none available.
*
* @return \Crossjoin\Browscap\Updater\AbstractUpdater
*/
public static function getInstance()
{
if (function_exists('curl_init')) {
return new Curl();
} elseif ((bool) (int) ini_get('allow_url_fopen') !== false) {
return new FileGetContents();
} elseif (($browscapFile = (string) ini_get('browscap')) !== "") {
$updater = new Local();
$updater->setOption('LocalFile', $browscapFile);
return $updater;
}
return new None();
}
