/**
* Download an url and return or store contents.
*
* @param string $url
* @param bool $file
*
* @return bool|null|string
* @throws \Exception
*/
public static function download($url, $file = false)
{
if (Runtime::isCurlEnabled()) {
return static::curlDownload($url, $file);
} else {
if (Runtime::isAllowUrlFopenEnabled()) {
return static::fgetDownload($url, $file);
} else {
throw new \RuntimeException('No download mechanism available');
}
}
}