protected function sendHeaders()
{
if ($this->status != 200 && isset(self::$httpCodes[$this->status])) {
header(sprintf("%s %s", $this->protocol, self::$httpCodes[$this->status]));
}
if (!$this->headers) {
return;
}
if (!$this->headers->has('content-type')) {
$this->headers->set('content-type', 'text/html; charset=' . $this->charset);
}
foreach ($this->headers as $key => $value) {
header("{$key}: {$value}", true);
}
}