php打包程序（在线解压与在线打包下载源码）

php教程打包程序（在线解压与在线打包下载源码）
本程序支持文件下载解压与在线压缩,这样我们就查以实例在线解压与在线打包下载功能了。
*/
//phpzip.class.php
class phpzip{
 var $datasec, $ctrl_dir = array();
 var $eof_ctrl_dir = "x50x4bx05x06x00x00x00x00";
 var $old_offset = 0; var $dirs = array(".");
 function get_list($zip_name) {
   $zip = @fopen($zip_name, 'rb');
   if(!$zip) return(0);
   $centd = $this->readcentraldir($zip,$zip_name);

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

   for ($i=0; $i<$centd['entries']; $i++)
   {
    $header = $this->readcentralfileheaders($zip);
    $header['index'] = $i;$info['filename'] = $header['filename'];
    $info['stored_filename'] = $header['stored_filename'];
    $info['size'] = $header['size'];$info['compressed_size']=$header['compressed_size'];
    $info['crc'] = strtoupper(dechex( $header['crc'] ));
    $info['mtime'] = $header['mtime']; $info['comment'] = $header['comment'];
    $info['folder'] = ($header['external']==0x41ff0010||$header['external']==16)?1:0;
    $info['index'] = $header['index'];$info['status'] = $header['status'];
    $ret[]=$info; unset($header);
   }
  return $ret;
 }

 function add($files,$compact) {
  if(!is_array($files[0])) $files=array($files);
  for($i=0;$files[$i];$i++){
    $fn = $files[$i];
 if(!in_array(dirname($fn[0]),$this->dirs))
     $this->add_dir(dirname($fn[0]));
    if(basename($fn[0]))
     $ret[basename($fn[0])]=$this->add_file($fn[1],$fn[0],$compact);
  }
  return $ret;
 }

 function get_file() {
   $data = implode('', $this -> datasec);
   $ctrldir = implode('', $this -> ctrl_dir);

   return $data . $ctrldir . $this -> eof_ctrl_dir .
    pack('v', sizeof($this -> ctrl_dir)).pack('v', sizeof($this -> ctrl_dir)).
    pack('v', strlen($ctrldir)) . pack('v', strlen($data)) . "x00x00";
 }

 function add_dir($name)  {
   $name = str_replace("", "/", $name);
   $fr = "x50x4bx03x04x0ax00x00x00x00x00x00x00x00x00";

   $fr .= pack("v",0).pack("v",0).pack("v",0).pack("v", strlen($name) );
   $fr .= pack("v", 0 ).$name.pack("v", 0).pack("v", 0).pack("v", 0);
   $this -> datasec[] = $fr;

   $new_offset = strlen(implode("", $this->datasec));

   $cdrec = "x50x4bx01x02x00x00x0ax00x00x00x00x00x00x00x00x00";
   $cdrec .= pack("v",0).pack("v",0).pack("v",0).pack("v", strlen($name) );
   $cdrec .= pack("v", 0 ).pack("v", 0 ).pack("v", 0 ).pack("v", 0 );
   $ext = "xffxffxffxff";
   $cdrec .= pack("v", 16 ).pack("v", $this -> old_offset ).$name;

   $this -> ctrl_dir[] = $cdrec;
   $this -> old_offset = $new_offset;
   $this -> dirs[] = $name;
 }

 function add_file($data, $name, $compact = 1) {
   $name     = str_replace('', '/', $name);
   $dtime    = dechex($this->dostime());

   $hexdtime = 'x' . $dtime[6] . $dtime[7].'x'.$dtime[4] . $dtime[5]
     . 'x' . $dtime[2] . $dtime[3].'x'.$dtime[0].$dtime[1];
   eval('$hexdtime = "' . $hexdtime . '";');

   if($compact)
   $fr = "x50x4bx03x04x14x00x00x00x08x00".$hexdtime;
   else $fr = "x50x4bx03x04x0ax00x00x00x00x00".$hexdtime;
   $unc_len = strlen($data); $crc = crc32($data);

   if($compact){
     $zdata = gzcompress($data); $c_len = strlen($zdata);
     $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2);
   }else{
     $zdata = $data;
   }
   $c_len=strlen($zdata);
   $fr .= pack('v', $crc).pack('v', $c_len).pack('v', $unc_len);
   $fr .= pack('v', strlen($name)).pack('v', 0).$name.$zdata;

   $fr .= pack('v', $crc).pack('v', $c_len).pack('v', $unc_len);

   $this -> datasec[] = $fr;
   $new_offset        = strlen(implode('', $this->datasec));
   if($compact)
        $cdrec = "x50x4bx01x02x00x00x14x00x00x00x08x00";
   else $cdrec = "x50x4bx01x02x14x00x0ax00x00x00x00x00";
   $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'])
    {
      $hour = ($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'];
    $header['status'] = 'ok';
    if (substr($header['filename'], -1) == '/')
      $header['external'] = 0x41ff0010;
    return $header;
 }

 function readcentraldir($zip,$zip_name){
  $size = filesize($zip_name);
  if ($size < 277) $maximum_size = $size;
  else $maximum_size=277;

  @fseek($zip, $size-$maximum_size);
  $pos = ftell($zip); $bytes = 0x00000000;

  while ($pos < $size)
  {
    $byte = @fread($zip, 1); $bytes=($bytes << 8) | ord($byte);
    if ($bytes == 0x504b0506){ $pos++; break; } $pos++;
  }

 $data=unpack('vdisk/vdisk_start/vdisk_entries/ventries/vsize/voffset/vcomment_size',
        fread($zip, 18));

  if ($data['comment_size'] != 0)
    $centd['comment'] = fread($zip, $data['comment_size']);
    else $centd['comment'] = ''; $centd['entries'] = $data['entries'];
  $centd['disk_entries'] = $data['disk_entries'];
  $centd['offset'] = $data['offset'];$centd['disk_start'] = $data['disk_start'];
  $centd['size'] = $data['size'];  $centd['disk'] = $data['disk'];
  return $centd;
 }

 function extractfile($header,$to,$zip){
   $header = $this->readfileheader($zip);

   if(substr($to,-1)!="/") $to.="/";
   if(!@is_dir($to)) @mkdir($to,0777);

   $pth = explode("/",dirname($header['filename']));
   for($i=0;isset($pth[$i]);$i++){
     if(!$pth[$i]) continue;
     if(!is_dir($to.$pth[$i])) @mkdir($to.$pth[$i],0777);
   }
  if (!($header['external']==0x41ff0010)&&!($header['external']==16))
  {
   if ($header['compression']==0)
   {
    $fp = @fopen($to.$header['filename'], 'wb');
    if(!$fp) return(-1);
    $size = $header['compressed_size'];

    while ($size != 0)
    {
      $read_size = ($size < 2048 ? $size : 2048);
      $buffer = fread($zip, $read_size);
      $binary_data = pack('a'.$read_size, $buffer);
      @fwrite($fp, $binary_data, $read_size);
      $size -= $read_size;
    }
    fclose($fp);
    touch($to.$header['filename'], $header['mtime']);

  }else{
   $fp = @fopen($to.$header['filename'].'.gz','wb');
   if(!$fp) return(-1);
   $binary_data = pack('va1a1va1a1', 0x8b1f, chr($header['compression']),
     chr(0x00), time(), chr(0x00), chr(3));

   fwrite($fp, $binary_data, 10);
   $size = $header['compressed_size'];

   while ($size != 0)
   {
     $read_size = ($size < 1024 ? $size : 1024);
     $buffer = fread($zip, $read_size);
     $binary_data = pack('a'.$read_size, $buffer);
     @fwrite($fp, $binary_data, $read_size);
     $size -= $read_size;
   }

   $binary_data = pack('vv', $header['crc'], $header['size']);
   fwrite($fp, $binary_data,8); fclose($fp);

   $gzp = @gzopen($to.$header['filename'].'.gz','rb') or die("cette archive est compress");
    if(!$gzp) return(-2);
   $fp = @fopen($to.$header['filename'],'wb');
   if(!$fp) return(-1);
   $size = $header['size'];

   while ($size != 0)
   {
     $read_size = ($size < 2048 ? $size : 2048);
     $buffer = gzread($gzp, $read_size);
     $binary_data = pack('a'.$read_size, $buffer);
     @fwrite($fp, $binary_data, $read_size);
     $size -= $read_size;
   }
   fclose($fp); gzclose($gzp);

   touch($to.$header['filename'], $header['mtime']);
   @unlink($to.$header['filename'].'.gz');

  }}
  return true;
 }
}

?>
解压实例

//检查上传的临时文件是否存在
if(isset($_files["file"]["tmp_name"]) and $_files["file"]["type"]=="application/x-zip-compressed"){
 $filename = $_files["file"]["name"];
 //使用move_uploaded_file()把上传的临时文件,移动到当前目录
 if(move_uploaded_file($_files["file"]["tmp_name"],$filename)){
  //引用zip.php文件
  include_once("phpzip.class.php");
  //实例化zip类
  $zip = new phpzip();
  //使用zip类中的get_list()函数返回zip文件中的文件名数组
  $filenames = $zip->get_list($filename);
  //使用zip类中的extract()函数，解压zip中的文件到zip目录下
  $zstat = $zip->extract($filename,"zip");
  echo "

";

  echo "zip文件中的所有文件名：
";

  print_r($filenames);

  echo "zip文件解压后，单个文件的解压情况数组";

  print_r($zstat);

  echo "

 }else{
  echo "上传文件失败!";
 }
}
?>

打包下载实例

//
$zipdir = "zip"; //要打包并下载的目录
//检查是否存在
if(isset($_post["action"]) and isset($_post["file"])){
 include_once("phpzip.class.php");
 $zip = new phpzip();
 foreach($_post["file"] as $k=>$v){
  $vc = file_get_contents($zipdir."/".$v);
  $zip->add(array(array($v,$vc)),0);
 }
    fputs(fopen("test.zip","wb"), $zip->get_file());
 switch($_post["action"]){
  case "zip":
   echo "下载";
  break;
  case "zip and download":
   //取得文件名称
   $filename = "test.zip";
   //输出头信息
   header("pragma:public");
   header("expires:0");
   header("cache-component:must-revalidate,post-check=0,pre-check=0");
   header("content-type:application/x-zip-compressed");
   header("content-length:".filesize($filename));
   header("content-disposition:attachment;filename=".$filename);
   header("content-transfer-encoding:binary");
   //输出文件到缓冲区
   readfile($filename);
   exit();
  break;
 }
}
?>