private static function _sendHeaders() { if (!isset(self::$_aHeaders['Content-Type'])) { self::$_aHeaders['Content-Type'] = 'text/html'; } if (self::$_sCharset) { self::$_aHeaders['Content-Type'] .= '; charset=' . self::$_sCharset; } if (!isset(self::$_aHeaders['Cache-Control'])) { self::$_aHeaders['Cache-Control'] = 'max-age=31536000'; // One year self::$_aHeaders['Pragma'] = 'max-age=31536000'; self::$_aHeaders['Expires'] = gmdate('D, d M Y H:i:s \\G\\M\\T', time() + 31536000); self::$_aHeaders['etag'] = M::BUILD_ID(); } if (self::$_bReadyToSend) { foreach (self::$_aHeaders as $sName => $sValue) { header("{$sName}" . ($sValue ? ": {$sValue}" : '')); } } self::$_aHeaders = []; }