function send_file_to_client($real_filename, $filename, $disposition = null, $send_name = false, $delete = false)
{
if (!file_exists($real_filename)) {
return false;
}
$content_type = get_mime_type($filename);
if ($content_type == 'text/html') {
$charset = '; charset=' . html_charset($real_filename);
} elseif ($content_type == 'text/plain') {
$charset = '; charset=' . text_charset($real_filename);
} else {
$charset = '';
}
if ($send_name) {
if (preg_match('/[^\\x20-\\x7E]/', $filename) and strstr($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false) {
$filename = urlencode($filename);
}
// Add quotes to filename if it contains spaces
if (strpos($filename, ' ') !== false) {
$filename = '"' . $filename . '"';
}
$filenameattr = '; filename=' . $filename;
if (!isset($disposition)) {
$disposition = 'attachment';
}
} else {
$filenameattr = '';
}
header("Content-type: {$content_type}{$charset}");
if (isset($disposition)) {
header("Content-Disposition: {$disposition}{$filenameattr}");
}
header('Pragma:');
header('Cache-Control: public');
header('Content-length: ' . filesize($real_filename));
$mtime = filemtime($real_filename);
$mdate = gmdate('D, d M Y H:i:s', $mtime);
$etag = md5($real_filename . $mdate . $filename . filesize($real_filename));
header('Last-Modified: ' . $mdate . ' GMT');
header("Etag: {$etag}");
if (array_key_exists('HTTP_IF_MODIFIED_SINCE', $_SERVER) and strtotime(preg_replace('/;.*$/', '', $_SERVER['HTTP_IF_MODIFIED_SINCE'])) >= $mtime or array_key_exists('HTTP_IF_NONE_MATCH', $_SERVER) and trim($_SERVER['HTTP_IF_NONE_MATCH']) == $etag) {
header("HTTP/1.0 304 Not Modified");
} else {
stop_output_buffering();
if ($delete) {
register_shutdown_function('unlink', $real_filename);
}
readfile($real_filename);
}
return true;
}
function send_file_to_client($real_filename, $filename, $disposition = null, $send_name = false, $delete = false)
{
if (!file_exists($real_filename)) {
return false;
}
$content_type = get_mime_type($filename);
if ($content_type == 'text/html') {
$charset = '; charset=' . html_charset($real_filename);
} elseif ($content_type == 'text/plain') {
$charset = '; charset=' . text_charset($real_filename);
} else {
$charset = '';
}
if ($send_name) {
if (preg_match('/[^\\x20-\\x7E]/', $filename) and strstr($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false) {
$filename = urlencode($filename);
}
// Add quotes to filename if it contains spaces
if (strpos($filename, ' ') !== false) {
$filename = '"' . $filename . '"';
}
$filenameattr = '; filename=' . $filename;
if (!isset($disposition)) {
$disposition = 'attachment';
}
} else {
$filenameattr = '';
}
header("Content-type: {$content_type}{$charset}");
if (isset($disposition)) {
header("Content-Disposition: {$disposition}{$filenameattr}");
}
header('Pragma:');
header('Cache-Control: public');
$mtime = filemtime($real_filename);
$mdate = gmdate('D, d M Y H:i:s', $mtime);
$etag = md5($real_filename . $mdate . $filename . filesize($real_filename));
header('Last-Modified: ' . $mdate . ' GMT');
header("Etag: {$etag}");
if (array_key_exists('HTTP_IF_MODIFIED_SINCE', $_SERVER) and strtotime(preg_replace('/;.*$/', '', $_SERVER['HTTP_IF_MODIFIED_SINCE'])) >= $mtime or array_key_exists('HTTP_IF_NONE_MATCH', $_SERVER) and trim($_SERVER['HTTP_IF_NONE_MATCH']) == $etag) {
header("HTTP/1.0 304 Not Modified");
} else {
if ($delete) {
register_shutdown_function('unlink', $real_filename);
}
$size = filesize($real_filename);
if (isset($_SERVER['HTTP_RANGE'])) {
// error_log('http range ON: ' . $_SERVER['HTTP_RANGE']); // debug output in apache error.log
// Parse the range header to get the byte offset
$ranges = array_map('intval', explode('-', substr($_SERVER['HTTP_RANGE'], 6)));
if (!$ranges[1]) {
// Second number missing, return from byte $range[0] to end
$start = $ranges[0];
$end = $size - 1;
} else {
// Both numbers present, return specific range
$start = $ranges[0];
$end = $ranges[1];
}
$length = $end - $start + 1;
// Send the appropriate headers
header('HTTP/1.1 206 Partial Content');
header('Accept-Ranges: bytes');
header('Content-Length: ' . $length);
header(sprintf('Content-Range: bytes %d-%d/%d', $start, $end, $size));
$f = fopen($real_filename, 'rb');
// Open the file in binary mode
$chunkSize = 8192;
// The size of each chunk to output
fseek($f, $start);
// Seek to the requested start range
stop_output_buffering();
while ($length) {
// Read in blocks of chunksize so we don't chew up memory on the server
$read = $length > $chunkSize ? $chunkSize : $length;
$length -= $read;
echo fread($f, $read);
}
fclose($f);
} else {
// error_log('http range OFF'); // debug output in apache error.log
header('Content-length: ' . $size);
stop_output_buffering();
readfile($real_filename);
}
}
return true;
}
