function load_profile($file_name) { $data = XHProfRuns_Default::read_file($file_name); $header = unpack("N/", $data); $igbinary_version = $header[1]; if ($igbinary_version >= 0 && $igbinary_version <= 3) { return igbinary_unserialize($data); } else { return unserialize($data); } }