Bitfinex2 Fetch Ohlcv

<?php

include './ccxt.php';

date_default_timezone_set('UTC');

$exchange = '\\ccxt\\bitfinex2';
$exchange = new $exchange(array(
   'rateLimit' => 12000,
));

// bitfinex2 breaks occasionally

for ($i = 0; $i < 1000; $i++) {
   $ohlcv = $exchange->fetch_ohlcv('BTC/USD', '1m');
   print_r ($exchange->iso8601($ohlcv[0][0]) . "\t" . count($ohlcv) . "\n");
}

?>