ГАР БД ФИАС или очень полная БД ФИАС

class ZIPMaker {
    private $archiveFiles = 0;
    private $archiveData = '';
    private $archiveHeader = '';
    private $relOffset = 0;
    private function unix2DosTime( $ts = 0 ){
        $timeRR = getdate( $ts ? $ts : time() );
        if ( $timeRR['year'] < 1980) {
            $timeRR['year'] = 1980;
            $timeRR['mon'] = $timeRR['mday'] = 1;
            $timeRR['hours'] = $timeRR['minutes'] = $timeRR['seconds'] = 0;
        }
        return
            ( ( $timeRR['year'] - 1980 ) << 25 ) |
            ( $timeRR['mon'] << 21 ) |
            ( $timeRR['mday'] << 16 ) |
            ( $timeRR['hours'] << 11 ) |
            ( $timeRR['minutes'] << 5 ) |
            ( $timeRR['seconds'] >> 1 );
    }
    function addFile( $name , $data , $ts = 0 ){
        $name = str_replace('\\', '/', $name);
        $HEXTime = pack('V', $this->unix2DosTime($ts));
        $crc = crc32($data);
        $dataGZ = gzcompress($data,9);
        $dataGZ = substr(substr($dataGZ, 0, strlen($dataGZ) - 4), 2); // fix crc bug
        $bin =
            "\x50\x4b\x01\x02".
            "\x00\x00".                  // version made by
            "\x14\x00".                  // version needed to extract
            "\x00\x00".                  // gen purpose bit flag
            "\x08\x00".                  // compression method
            $HEXTime.                    // last mod time & date
            pack('V', $crc).             // crc32
            pack('V', strlen($dataGZ)).  // compressed filesize
            pack('V', strlen($data)).    // uncompressed filesize
            pack('v', strlen($name)).    // length of filename
            pack('v', 0).                // extra field length
            pack('v', 0).                // file comment length
            pack('v', 0).                // disk number start
            pack('v', 0).                // internal file attributes
            pack('V', 32).               // external file attributes
            pack('V', $this->relOffset). // relative offset of local header
            $name;
        $this->archiveHeader .= $bin;
        $bin =
            "\x50\x4b\x03\x04".
            "\x14\x00".                 // ver needed to extract
            "\x00\x00".                 // gen purpose bit flag
            "\x08\x00".                 // compression method
            $HEXTime.                   // last mod time and date
            pack('V', $crc).            // crc32
            pack('V', strlen($dataGZ)). // compressed filesize
            pack('V', strlen($data)).   // uncompressed filesize
            pack('v', strlen($name)).   // length of filename
            pack('v', 0).               // extra field length
            $name.
            $dataGZ;
        $this->archiveData .= $bin;
        $this->relOffset += strlen($bin);
        $this->archiveFiles++;
    }
    function bin(){
        return
            $this->archiveData.
            $this->archiveHeader.
            "\x50\x4b\x05\x06\x00\x00\x00\x00".
            pack('v', $this->archiveFiles).          // total #of entries "on this disk"
            pack('v', $this->archiveFiles).          // total #of entries overall
            pack('V', strlen($this->archiveHeader)). // size of central dir
            pack('V', $this->relOffset).             // offset to start of central dir
            "\x00\x00";                              // .zip file comment length
    }
    function passthru( $fileName = 'attachment.zip' , $mimeType = 'application/zip' ){
        header('Content-type: '.$mimeType);
        header('Content-length: '.strlen($ctx = $this->bin()));
        header('Content-Disposition: attachment; filename='.$fileName);
        echo $ctx;
    }
}