Question

How to unpack() the first structure in this list?

I want the second field as integer (or to say better as float since PHP doesn’t support 64bit int)

Answer 1

Thanks to mario, I solved it like this:

$a = unpack("i", $this->read(4));
$b = unpack("i", $this->read(4));
$packet['file_length'] = $a[1] + $b[1] * 0x100000000;

Where $this->read() is a wrapper for:

mb_substr($data, $offset, $length, '8bit');