$length argument for fpassthru

[divinity76]

Description

would be nice to have a ?int $length=null for fpassthru.

currently, implementing HTTP range requests seems to be a pain: readfile() isn't suitable because it has neither a $offset nor a $length argument, and fpassthru isn't suitable either because it doesn't have a $length argument, so you'll have to resort to a fread()+echo loop.

It would be easier and faster to implement HTTP range support if fpassthru had a $length argument.

[damianwadley]

Have you seen stream_copy_to_stream?

$input = fopen("/path/to/file.ext", "rb");
$output = fopen("php://output", "wb");
stream_copy_to_stream($input, $output, $length, $offset);
fclose($output);
fclose($input);

Not a complete solution but it's better than an fread loop.