PhpOffice\PhpPresentation\Reader\PowerPoint97::getInt4d PHP Method

    public static function getInt4d($data, $pos)
    {
        // FIX: represent numbers correctly on 64-bit system
        // http://sourceforge.net/tracker/index.php?func=detail&aid=1487372&group_id=99160&atid=623334
        // Hacked by Andreas Rehm 2006 to ensure correct result of the <<24 block on 32 and 64bit systems
        $or24 = ord($data[$pos + 3]);
        $ord24 = ($or24 & 127) << 24;
        if ($or24 >= 128) {
            // negative number
            $ord24 = -abs(256 - $or24 << 24);
        }
        return ord($data[$pos]) | ord($data[$pos + 1]) << 8 | ord($data[$pos + 2]) << 16 | $ord24;
    }