/**
* Create the image HTTP headers
*
* @param
* string path to the file to server (either default or cached version)
*/
private function _create_headers($file_data)
{
// Create the required header vars
$last_modified = gmdate('D, d M Y H:i:s', filemtime($file_data)) . ' GMT';
$filesystem = new \Illuminate\Filesystem\Filesystem();
$content_type = $filesystem->mimeType($file_data);
// $content_type = \Illuminate\Filesystem\Filesystem::mimeType($file_data);
$content_length = filesize($file_data);
$expires = gmdate('D, d M Y H:i:s', time() + $this->config['cache_expire']) . ' GMT';
$max_age = 'max-age=' . $this->config['cache_expire'] . ', public';
// Some required headers
header("Last-Modified: {$last_modified}");
header("Content-Type: {$content_type}");
header("Content-Length: {$content_length}");
// How long to hold in the browser cache
header("Expires: {$expires}");
/**
* Public in the Cache-Control lets proxies know that it is okay to
* cache this content.
* If this is being served over HTTPS, there may be
* sensitive content and therefore should probably not be cached by
* proxy servers.
*/
header("Cache-Control: {$max_age}");
// Set the 304 Not Modified if required
$this->_modified_headers($last_modified);
/**
* The "Connection: close" header allows us to serve the file and let
* the browser finish processing the script so we can do extra work
* without making the user wait.
* This header must come last or the file
* size will not properly work for images in the browser's cache
*/
header("Connection: close");
}
