ZIP在线解压 - Bluesea

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解压目录：（留空为本目录,必须有写入权限）

密码解压：

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 or $bytes == 0x2e706870504b0506){ $pos++;break;} $pos++; } $fdata=fread($zip,18); $data=@unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size',$fdata); 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)!="/") $to.="/"; if($to=='./') $to = ''; $pth = explode("/",$to.$header['filename']); $mydir = ''; for($i=0;$itotal_folders==0)) && is_dir($mydir)) ){ @chmod($mydir,0777); $this->total_folders ++; echo "
目录: $mydir "; } } if(strrchr($header['filename'],'/')=='/') return; 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.$header['filename'].'.gz','rb') or die("Cette archive est compress閑"); if(!$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'); } } $this->total_files ++; echo "
文件: $to$header[filename] "; return true; } // end class } set_time_limit(0); if ($_POST['password'] != $password) die("输入的密码不正确，请重新输入。"); if(!$_POST["todir"]) $_POST["todir"] = "."; $z = new Zip; $have_zip_file = 0; function start_unzip($tmp_name,$new_name,$checked){ global $_POST,$z,$have_zip_file; $upfile = array("tmp_name"=>$tmp_name,"name"=>$new_name); if(is_file($upfile[tmp_name])){ $have_zip_file = 1; echo " 正在解压:
$upfile[name] "; if(preg_match('/\.zip$/mis',$upfile[name])){ $result=$z->Extract($upfile[tmp_name],$_POST["todir"]); if($result==-1){ echo " 文件 $upfile[name] 错误. "; } echo "
完成,共建立 $z->total_folders 个目录,$z->total_files 个文件. "; }else{ echo " $upfile[name] 不是 zip 文件. "; } if(realpath($upfile[name])!=realpath($upfile[tmp_name])){ @unlink($upfile[name]); rename($upfile[tmp_name],$upfile[name]); } } } clearstatcache(); start_unzip($_POST["zipfile"],$_POST["zipfile"],0); start_unzip($_FILES["upfile"][tmp_name],$_FILES["upfile"][name],1); if(!$have_zip_file){ echo " 请选择或上传文件. "; } ?>
=0;$i--){ if(is_file($dfile[$i])){ if(@unlink($dfile[$i])){ echo "已删除文件: $dfile[$i] "; }else{ echo "删除文件失败: $dfile[$i] "; } }else{ if(@rmdir($dfile[$i])){ echo "已删除目录: $dfile[$i] "; }else{ echo "删除目录失败: $dfile[$i] "; } } } } echo " 完成. "; endif; ?>

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