/**
* Force a download of a file to the user's browser. This function is
* binary-safe and will work with any MIME type that Eight is aware of.
*
* @param string a file path or file name
* @param mixed data to be sent if the filename does not exist
* @param string suggested filename to display in the download
*/
public static function download($filename = nil, $data = nil, $nicename = nil)
{
if (empty($filename)) {
return NO;
}
if (is_file($filename)) {
// Get the real path
$filepath = str_replace('\\', '/', realpath($filename));
// Set filesize
$filesize = filesize($filepath);
// Get filename
$filename = substr(strrchr('/' . $filepath, '/'), 1);
// Get extension
$extension = strtolower(substr(strrchr($filepath, '.'), 1));
} else {
// Get filesize
$filesize = strlen($data);
// Make sure the filename does not have directory info
$filename = substr(strrchr('/' . $filename, '/'), 1);
// Get extension
$extension = strtolower(substr(strrchr($filename, '.'), 1));
}
// Get the mime type of the file
$mime = Eight::config('mimes.' . $extension);
if (empty($mime)) {
// Set a default mime if none was found
$mime = array('application/octet-stream');
}
// Generate the server headers
header('Content-Type: ' . $mime[0]);
header('Content-Disposition: attachment; filename="' . (empty($nicename) ? $filename : $nicename) . '"');
header('Content-Transfer-Encoding: binary');
header('Content-Length: ' . sprintf('%d', $filesize));
// More caching prevention
header('Expires: 0');
if (Eight::user_agent('browser') === 'Internet Explorer') {
// Send IE headers
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
} else {
// Send normal headers
header('Pragma: no-cache');
}
// Clear the output buffer
Eight::close_buffers(NO);
if (isset($filepath)) {
// Open the file
$handle = fopen($filepath, 'rb');
// Send the file data
fpassthru($handle);
// Close the file
fclose($handle);
} else {
// Send the file data
echo $data;
}
}
/**
* Cleans up the PHP environment. Disables error/exception handling and the
* auto-loading method and closes the output buffer.
*
* This method does not need to be called during normal system execution,
* however in some advanced situations it can be helpful.
*/
public static function cleanup()
{
static $run;
// Only run this function once
if ($run === TRUE) {
return;
}
$run = TRUE;
// Using Eight Errors? Disable them since we're finished.
if (Eight::$errors === TRUE) {
Eight_Exception::disable();
Eight_Exception_PHP::disable();
}
spl_autoload_unregister(array('Eight', 'auto_load'));
Eight::close_buffers();
}
