PHPZip usage-php Tutorial

Use of PHPZip

Class PHPZip { Function Zip ($ dir, $ zipfilename) { If (@ function_exists ('gzcompress ')) { $ Curdir = getcwd (); If (is_array ($ dir )) { $ Filelist = $ dir; } Else { $ Filelist = $ this-> GetFileList ($ dir ); } If ((! Empty ($ dir ))&&(! Is_array ($ dir) & (file_exists ($ dir) chdir ($ dir ); Else chdir ($ curdir ); If (count ($ filelist)> 0) { Foreach ($ filelist as $ filename) { If (is_file ($ filename )) { $ Fd = fopen ($ filename, "r "); $ Content = fread ($ fd, filesize ($ filename )); Fclose ($ fd ); If (is_array ($ dir) $ filename = basename ($ filename ); $ This-> addFile ($ content, $ filename ); } } $ Out = $ this-> file (); Chdir ($ curdir ); $ Fp = fopen ($ zipfilename, "w "); Fwrite ($ fp, $ out, strlen ($ out )); Fclose ($ fp ); } Return 1; } Else return 0; } Function GetFileList ($ dir) { If (file_exists ($ dir )) { $ Args = func_get_args (); $ Pref = $ args [1]; $ Dh = opendir ($ dir ); While ($ files = readdir ($ dh )) { If ($ files! = ".") & ($ Files! = "..")) { If (is_dir ($ dir. $ files )) { $ Curdir = getcwd (); Chdir ($ dir. $ files ); $ File = array_merge ($ file, $ this-> GetFileList ("", "$ pref $ files /")); Chdir ($ curdir ); } Else $ file [] = $ pref. $ files; } } Closedir ($ dh ); } Return $ file; } Var $ datasec = array (); Var $ ctrl_dir = array (); Var $ eof_ctrl_dir = "x50x4bx05x06x00x00x00x00 "; Var $ old_offset = 0; /** * Converts an Unix timestamp to a four byte DOS date and time format (date * In high two bytes, time in low two bytes allowing magn1_comparison ). * * @ Param integer the current Unix timestamp * * @ Return integer the current date in a four byte DOS format * * @ Access private */ 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 ); } // End of the 'unix2dostime () 'method /** * Adds "file" to archive * * @ Param string file contents * @ Param string name of the file in the archive (may contains the path) * @ Param integer the current timestamp * * @ Access public */ 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 = "x50x4bx03x04 "; $ Fr. = "x14x00"; // ver needed to extract $ Fr. = "x00x00"; // gen purpose bit flag $ Fr. = "x08x00"; // 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 = "x50x4bx01x02 "; $ Cdrec. = "x00x00"; // version made $ Cdrec. = "x14x00"; // version needed to extract $ Cdrec. = "x00x00"; // gen purpose bit flag $ Cdrec. = "x08x00"; // 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; } // End of the 'addfile () 'method /** * Dumps out file * * @ Return string the zipped file * * @ Access public */ Function file () { $ 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 "X00x00"; //. zip file comment length } // End of the 'file () 'method } // End of the 'phpzip' class ?> // Usage $ Z = new PHPZip (); // Create a zip class Method 1: $ Z-> Zip ("", "out1.zip"); // add all files under the current directory and subdirectory Method 2: Using filespolicarray('1.txt', 'gb.txt '); Using files000000000000'5.txt '; $ Z-> Zip ($ files, "out2.zip"); // add a file list Method 3: $ Z-> Zip ("/usr/local/sext/", "out3.zip"); // add a specified directory ?>

PHPZip