Php compressed file help class

Php compressed file help class

/* File name:/include/zip. php Author: hsf-e 2009/04/15 */ Class PHPZip { Var $ dirInfo = array ("0", "0 "); Var $ rootDir = ''; Var $ datasec = array (); Var $ ctrl_dir = array (); Var $ eof_ctrl_dir = "/x50/x4b/x05/x06/x00/x00/x00/x00 "; Var $ old_offset = 0; Function downloadZip (){ CreateZip ($ dir, $ zipfilename, true ); } Function createZip ($ dir, $ zipfilename, $ autoDownload = false ){ If (@ function_exists ('gzcompress ')){ @ Set_time_limit ("0 "); If (is_array ($ dir )){ $ Fd = fopen ($ dir, "r "); $ FileValue = fread ($ fd, filesize ($ filename )); Fclose ($ fd ); If (is_array ($ dir) $ filename = basename ($ dir ); $ This-> addFile ($ fileValue, "$ filename "); } Else { $ This-> dirTree ($ dir, $ dir ); } $ Zipfilenametemp = time (). $ zipfilename; $ Out = $ this-> filezip (); $ Fp = fopen ($ zipfilenametemp, "w "); Fwrite ($ fp, $ out, strlen ($ out )); Fclose ($ fp ); $ Filesize = filesize ($ zipfilenametemp ); If ($ filesize <104857600 ){ If ($ autoDownload ){ Header ("Content-type: application/octet-stream "); Header ("Content-disposition: attachment; filename =". $ zipfilename ); } Echo $ this-> filezip (); } Else { Echo "create zip error! "; } Unlink ($ zipfilenametemp ); } } // Get dir tree .. Function dirTree ($ directory, $ rootDir ){ Global $ _ SERVER, $ dirInfo, $ rootDir; $ FileDir = $ rootDir; $ MyDir = dir ($ directory ); While ($ file = $ myDir-> read ()){ If (is_dir ("$ directory/$ file") and $ file! = "." And $ file! = ".."){ $ DirInfo [0] ++; $ RootDir = "$ fileDir $ file /"; $ This-> addFile (''," $ rootDir "); // Go on n's folders $ This-> dirTree ("$ directory/$ file", $ rootDir ); } Else { If ($ file! = "." And $ file! = ".."){ $ DirInfo [1] ++; // $ Fd = fopen ("$ directory/$ file", "r "); $ FileValue = file_get_contents ("$ directory/$ file "); // Fclose ($ fd ); $ This-> addFile ($ fileValue, "$ fileDir $ file "); } } } $ MyDir-> close (); } Function unix2DosTime ($ unixtime = 0 ){ $ Timearray = ($ unixtime = 0 )? Getdate (): getdate ($ unixtime ); If ($ timearray ['Year'] <1980 ){ $ Timearray ['Year'] = 1980; $ Timearray ['mon'] = 1; $ Timearray ['mday'] = 1; $ Timearray ['urs'] = 0; $ Timearray ['minutes '] = 0; $ Timearray ['seconds'] = 0; } // End if Return ($ timearray ['Year']-1980) <25) | ($ timearray ['mon'] <21) | ($ timearray ['mday'] <16) | ($ Timearray ['urs'] <11) | ($ timearray ['minutes '] <5) | ($ timearray ['seconds']> 1 ); } Function addFile ($ data, $ name, $ time = 0 ){ $ Name = str_replace ('//', '/', $ name ); $ Dtime = dechex ($ this-> unix2DosTime ($ time )); $ Hexdtime = '/x'. $ dtime [6]. $ dtime [7] . '/X'. $ dtime [4]. $ dtime [5] . '/X'. $ dtime [2]. $ dtime [3] . '/X'. $ dtime [0]. $ dtime [1]; Eval ('$ hexdtime = "'. $ hexdtime .'";'); $ Fr = "/x50/x4b/x03/x04 "; $ Fr. = "/x14/x00"; // ver needed to extract $ Fr. = "/x00/x00"; // gen purpose bit flag $ Fr. = "/x08/x00"; // compression method $ Fr. = $ hexdtime; // last mod time and date // "Local file header" segment $ Unc_len = strlen ($ data ); $ Crc = crc32 ($ data ); $ Zdata = gzcompress ($ data ); $ C_len = strlen ($ zdata ); $ Zdata = substr ($ zdata, 0, strlen ($ zdata)-4), 2); // fix the crc bug $ Fr. = pack ('v', $ crc); // crc32 $ Fr. = pack ('v', $ c_len); // compressed filesize $ Fr. = pack ('v', $ unc_len); // uncompressed filesize $ Fr. = pack ('v', strlen ($ name); // length of filename $ Fr. = pack ('v', 0); // extra field length $ Fr. = $ name; // "File data" segment $ Fr. = $ zdata; // "Data descriptor" segment (optional but necessary if archive is not // Served as file) $ Fr. = pack ('v', $ crc); // crc32 $ Fr. = pack ('v', $ c_len); // compressed filesize $ Fr. = pack ('v', $ unc_len); // uncompressed filesize // Add this entry to array $ This-> datasec [] = $ fr; $ New_offset = strlen (implode ('', $ this-> datasec )); // Now add to central directory record $ Cdrec = "/x50/x4b/x01/x02 "; $ Cdrec. = "/x00/x00"; // version made $ Cdrec. = "/x14/x00"; // version needed to extract $ Cdrec. = "/x00/x00"; // gen purpose bit flag $ Cdrec. = "/x08/x00"; // compression method $ Cdrec. = $ hexdtime; // last mod time & date $ Cdrec. = pack ('v', $ crc); // crc32 $ Cdrec. = pack ('v', $ c_len); // compressed filesize $ Cdrec. = pack ('v', $ unc_len); // uncompressed filesize $ Cdrec. = pack ('v', strlen ($ name); // length of filename $ Cdrec. = pack ('v', 0); // extra field length $ Cdrec. = pack ('v', 0); // file comment length $ Cdrec. = pack ('v', 0); // disk number start $ Cdrec. = pack ('v', 0); // internal file attributes $ Cdrec. = pack ('v', 32); // external file attributes-'archive' bit set $ Cdrec. = pack ('v', $ this-> old_offset); // relative offset of local header $ This-> old_offset = $ new_offset; $ Cdrec. = $ name; // Optional extra field, file comment goes here // Save to central directory $ This-> ctrl_dir [] = $ cdrec; } Function filezip (){ $ Data = implode ('', $ this-> datasec ); $ Ctrldir = implode ('', $ this-> ctrl_dir ); Return $ Data. $ Ctrldir. $ This-> eof_ctrl_dir. Pack ('v', sizeof ($ this-> ctrl_dir). // total # of entries "on this disk" Pack ('v', sizeof ($ this-> ctrl_dir). // total # of entries overall Pack ('v', strlen ($ ctrldir). // size of central dir Pack ('v', strlen ($ data). // offset to start of central dir "/X00/x00"; //. zip file comment length } } ?> There is another relatively simple [Php] view plaincopy Class createzip { /* @ Creates a compressed zip file: function for compressing multiple files into one zip file * @ $ Files array type instance array ("1.jpg"," 2.jpg "); * @ Destination the path of the target file, for example, "c:/androidyue.zip" * @ $ Overwrite indicates whether to overwrite the same object as the target object. * @ Recorded By Androidyue * @ Blog: http://thinkblog.sinaapp.com */ Function create_zip ($ files = array (), $ destination = '', $ overwrite = false) { // If the zip file already exists and is set to not overwrite, false is returned. If (file_exists ($ destination )&&! $ Overwrite) {return false ;} $ Valid_files = array (); // If files were passed in... // Obtain the real and valid file name If (is_array ($ files )){ // Cycle through each file Foreach ($ files as $ file ){ // Make sure the file exists If (file_exists ($ file )){ $ Valid_files [] = $ file; } } } // If a real and valid file exists If (count ($ valid_files )) { // Create the archive $ Zip = new ZipArchive (); // Open the file and overwrite it if it already exists. otherwise, create If ($ zip-> open ($ destination, $ overwrite? ZIPARCHIVE: OVERWRITE: ZIPARCHIVE: CREATE )! = True ){ Return false; } // Add a file to the compressed file Foreach ($ valid_files as $ file ){ $ Zip-> addFile ($ file, $ file ); } // Close the file $ Zip-> close (); // Check whether the file exists Return file_exists ($ destination ); } Else { // If no valid file exists, false is returned. Return false; } } } /**** // Test the function $ Files = array ('temp. php', 'Test. php '); Create_zip ($ files, 'myzipfile.zip ', true ); ****/ ?>

Compressed file, php