Support HTTP Header Range, mp4, php.php/mp4.mp4

gistfile1.php

<?php
# Nginx don't have PATH_INFO
if (!isset($_SERVER['PATH_INFO'])) {
	$_SERVER['PATH_INFO'] = substr($_SERVER["ORIG_SCRIPT_FILENAME"], strlen($_SERVER["SCRIPT_FILENAME"]));
}

$request = substr($_SERVER['PATH_INFO'], 1);
$file = $request;
$fp = @fopen($file, 'rb');

$size   = filesize($file); // File size
$length = $size;           // Content length
$start  = 0;               // Start byte
$end    = $size - 1;       // End byte

header('Content-type: video/mp4');
header("Accept-Ranges: 0-$length");
if (isset($_SERVER['HTTP_RANGE'])) {

    $c_start = $start;
    $c_end   = $end;

    list(, $range) = explode('=', $_SERVER['HTTP_RANGE'], 2);
    if (strpos($range, ',') !== false) {
        header('HTTP/1.1 416 Requested Range Not Satisfiable');
        header("Content-Range: bytes $start-$end/$size");
        exit;
    }
    if ($range == '-') {
        $c_start = $size - substr($range, 1);
    }else{
        $range  = explode('-', $range);
        $c_start = $range[0];
        $c_end   = (isset($range[1]) && is_numeric($range[1])) ? $range[1] : $size;
    }
    $c_end = ($c_end > $end) ? $end : $c_end;
    if ($c_start > $c_end || $c_start > $size - 1 || $c_end >= $size) {
        header('HTTP/1.1 416 Requested Range Not Satisfiable');
        header("Content-Range: bytes $start-$end/$size");
        exit;
    }
    $start  = $c_start;
    $end    = $c_end;
    $length = $end - $start + 1;
    fseek($fp, $start);
    header('HTTP/1.1 206 Partial Content');
}

header("Content-Range: bytes $start-$end/$size");
header("Content-Length: ".$length);


$buffer = 1024 * 8;
while(!feof($fp) && ($p = ftell($fp)) <= $end) {

    if ($p + $buffer > $end) {
        $buffer = $end - $p + 1;
    }
    set_time_limit(0);
    echo fread($fp, $buffer);
    flush();
}

fclose($fp);
exit();
?>

slim-4.php

<?php

public function downloadVideo(Request $request, Response $response, $args): Response
{
	$originalFileName = $args['original_file_name'];
	$media = $this->mediaFacade->byOriginalFileName($originalFileName);
	if ($media instanceof ErrorDto) {
		return RequestResponseService::send400(null, $media);
	}
	$mediaPath = $this->mediaFacade->getMediaPath($media->getAttribute('file_name'));
	if ($mediaPath instanceof ErrorDto) {
		return RequestResponseService::send400(null, $mediaPath);
	}
	if (!file_exists($mediaPath)) {
		return RequestResponseService::send404();
	}
	$file = fopen($mediaPath, 'rb');
	$stream = new Stream($file);
	$size = filesize($mediaPath);
	$length = $size;
	$start = 0;
	$end = $size - 1;

	$response =
		$response->withHeader('Content-Type', mime_content_type($mediaPath))->withHeader('Accept-Ranges', 'bytes');

	if (isset($_SERVER['HTTP_RANGE'])) {
		list(, $range) = explode('=', $_SERVER['HTTP_RANGE'], 2);
		if (str_contains($range, ',')) {
			return $response->withStatus(416)->withHeader('Content-Range', "bytes $start-$end/$size");
		}

		$c_start = $start;
		$c_end = $end;

		if ($range == '-') {
			$c_start = $size - intval(substr($range, 1));
		} else {
			$range = explode('-', $range);
			$c_start = intval($range[0]);
			$c_end = (isset($range[1]) && is_numeric($range[1])) ? intval($range[1]) : $size;
		}
		$c_end = ($c_end > $end) ? $end : $c_end;
		if ($c_start > $c_end || $c_start > $size - 1 || $c_end >= $size) {
			return $response->withStatus(416)->withHeader('Content-Range', "bytes $start-$end/$size");
		}

		$start = $c_start;
		$end = $c_end;
		$length = $end - $start + 1;
		$stream->seek($start);
		$response = $response->withStatus(206);
	}

	$response =
		$response->withHeader('Content-Range', "bytes $start-$end/$size")->withHeader('Content-Length', $length);

	$buffer = 1024 * 8;
	$content = '';

	while (!$stream->eof() && ($p = $stream->tell()) <= $end) {

		if ($p + $buffer > $end) {
			$buffer = $end - $p + 1;
		}
		$contentPart = $stream->read($buffer);
		if ($contentPart) {
			$content .= $contentPart;
		}
	}

	$stream->close();

	$response = $response->withHeader('Content-Disposition', 'attachment; filename="' . $originalFileName . '"')
	                     ->withHeader('Content-Description', 'File Transfer')
	                     ->withHeader('Content-Transfer-Encoding', 'binary')->withHeader('Expires', '0')
	                     ->withHeader('Cache-Control', 'must-revalidate')->withHeader('Pragma', 'public');

	$response->getBody()->write($content);

	return $response;
}

?>