/**
* singleton logic
*
* @return self
*/
public static function getInstance()
{
if (null === self::$aInstance) {
self::$aInstance = new self();
self::$aHosts = sfConfig::get('app_amazons3_hosts');
self::$aHostCount = count(self::$aHosts);
$encodings = array_key_exists('HTTP_ACCEPT_ENCODING', $_SERVER) ? $_SERVER['HTTP_ACCEPT_ENCODING'] : false;
if (preg_match('/(gzip|deflate)/i', $encodings) && sfConfig::get('app_settings_gzip', 1) && !preg_match('/safari/i', $_SERVER["HTTP_USER_AGENT"])) {
self::$gZip = true;
}
}
return self::$aInstance;
}
