PHP Compressed Files Help class

/* File Name:/include/zip.php Author:horace 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 [' hours '] = 0; $timearray [' minutes '] = 0; $timearray [' seconds '] = 0; }//End If Return (($timearray [' Year ']-1980) << 25) | ($timearray [' mon '] << 21) | ($timearray [' Mday '] << 16) | ($timearray [' hours '] << 11) | ($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); $zdata = substr (substr ($zdata, 0, strlen ($zdata)-4), 2); Fix 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 are 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 by $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. Eof_ctrl_dir, $this. Pack (' V ', sizeof ($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 the central Dir "/x00/x00"; . zip file Comment length } } ?> There's another one that's relatively simple. [PHP] View plaincopy Class Createzip { /* @creates A compressed zip file to compress multiple files into a single zip function * @ $files Array type instance, array ("1.jpg", "2.jpg"); * @destination the path to the target file, such as "C:/androidyue.zip" * @ $overwrite whether to overwrite the same file as the target file * @Recorded by Androidyue * @Blog: http://thinkblog.sinaapp.com */ function Create_zip ($files = Array (), $destination = "", $overwrite = False) { Returns False if the zip file already exists and is set to No Override if (file_exists ($destination) &&! $overwrite) {return false;} $valid _files = Array (); If files were passed in ... Get to a real valid file name if (Is_array ($files)) { Cycle through each file foreach ($files as $file) { Make sure the file exists if (file_exists ($file)) { $valid _files[] = $file; } } } If there is a real valid file if (count ($valid _files)) { Create the Archive $zip = new Ziparchive (); Open file Overwrite if file already exists, if not, create if ($zip->open ($destination, $overwrite? Ziparchive::overwrite:ziparchive::create)!== true) { return false; } To add a file to a compressed file foreach ($valid _files as $file) { $zip->addfile ($file, $file); } Close File $zip->close (); Detects if a file exists return file_exists ($destination); } else{ False if no real valid file is returned return false; } } } /**** Test function $files =array (' temp.php ', ' test.php '); Create_zip ($files, ' Myzipfile.zip ', true); ****/ ?> Copy Code

Compressed files, PHP

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