if($compact)

　　$cdrec = "\x50\x4b\x01\x02\x00\x00\x14\x00\x00\x00\x08\x00";

　　else $cdrec = "\x50\x4b\x01\x02\x14\x00\x0a\x00\x00\x00\x00\x00";

　　$cdrec .= $hexdtime.pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);

　　$cdrec .= pack('v', strlen($name) ).pack('v', 0 ).pack('v', 0 );

　　$cdrec .= pack('v', 0 ).pack('v', 0 ).pack('V', 32 );

　　$cdrec .= pack('V', $this -> old_offset );

　　$this -> old_offset = $new_offset;

　　$cdrec .= $name;

　　$this -> ctrl_dir[] = $cdrec;

　　return true;

　　}

　　function DosTime() {

　　$timearray = getdate();

　　if ($timearray['year'] < 1980) {

　　$timearray['year'] = 1980; $timearray['mon'] = 1;

　　$timearray['mday'] = 1; $timearray['hours'] = 0;

　　$timearray['minutes'] = 0; $timearray['seconds'] = 0;

　　}

　　return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) | ($timearray['hours'] << 11) |

　　($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);

　　}

　　function Extract ( $zn, $to, $index = Array(-1) )

　　{

　　$ok = 0; $zip = @fopen($zn,'rb');

　　if(!$zip) return(-1);

　　$cdir = $this->ReadCentralDir($zip,$zn);

　　$pos_entry = $cdir['offset'];

　　if(!is_array($index)){ $index = array($index); }

　　for($i=0; $index[$i];$i++){

　　if(intval($index[$i])!=$index[$i]||$index[$i]>$cdir['entries'])

　　return(-1);

　　}

　　for ($i=0; $i<$cdir['entries']; $i++)

　　{

　　@fseek($zip, $pos_entry);

　　$header = $this->ReadCentralFileHeaders($zip);

　　$header['index'] = $i; $pos_entry = ftell($zip);

　　@rewind($zip); fseek($zip, $header['offset']);

　　if(in_array("-1",$index)||in_array($i,$index))

　　$stat[$header['filename']]=$this->ExtractFile($header, $to, $zip);

　　}

　　fclose($zip);

　　return $stat;

　　}

　　function ReadFileHeader($zip)

　　{

　　$binary_data = fread($zip, 30);

　　$data = unpack('vchk/vid/vversion/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len', $binary_data);

　　$header['filename'] = fread($zip, $data['filename_len']);

　　if ($data['extra_len'] != 0) {

　　$header['extra'] = fread($zip, $data['extra_len']);

　　} else { $header['extra'] = ''; }

　　$header['compression'] = $data['compression'];$header['size'] = $data['size'];

　　$header['compressed_size'] = $data['compressed_size'];

　　$header['crc'] = $data['crc']; $header['flag'] = $data['flag'];

　　$header['mdate'] = $data['mdate'];$header['mtime'] = $data['mtime'];

　　if ($header['mdate'] && $header['mtime']){

　　$hour=($header['mtime']&0xF800)>>11;$minute=($header['mtime']&0x07E0)>>5;

　　$seconde=($header['mtime']&0x001F)*2;$year=(($header['mdate']&0xFE00)>>9)+1980;

　　$month=($header['mdate']&0x01E0)>>5;$day=$header['mdate']&0x001F;

　　$header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);

　　}else{$header['mtime'] = time();}

　　$header['stored_filename'] = $header['filename'];

　　$header['status'] = "ok";

　　return $header;

　　}

　　function ReadCentralFileHeaders($zip){

　　$binary_data = fread($zip, 46);

　　$header = unpack('vchkid/vid/vversion/vversion_extracted/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len/vcomment_len/vdisk/vinternal/Vexternal/Voffset', $binary_data);

　　if ($header['filename_len'] != 0)

　　$header['filename'] = fread($zip,$header['filename_len']);

　　else $header['filename'] = '';

　　if ($header['extra_len'] != 0)

　　$header['extra'] = fread($zip, $header['extra_len']);

　　else $header['extra'] = '';

　　if ($header['comment_len'] != 0)

　　$header['comment'] = fread($zip, $header['comment_len']);

　　else $header['comment'] = '';

　　if ($header['mdate'] && $header['mtime'])