public function progress($callback)
{
$this->setOpt(CURLOPT_PROGRESSFUNCTION, $callback);
$this->setOpt(CURLOPT_NOPROGRESS, false);
}
<?php require __DIR__ . '/vendor/autoload.php'; use Curl\Curl; $curl = new Curl(); $curl->progress(function ($client, $download_size, $downloaded, $upload_size, $uploaded) { if ($download_size === 0) { return; } $percent = floor($downloaded * 100 / $download_size); echo ' ' . $percent . '%' . "\r"; }); $curl->download('https://secure.php.net/distributions/manual/php_manual_en.html.gz', '/tmp/php_manual_en.html.gz');