一个完美的PHP ZIP压缩类代码.doc

一个完美的PHP ZIP压缩类代码本程序可以快速的实现把我们的文件利用php压缩类压缩成我们想的zip，或者rar 的压缩包,后缀名可以自定义哦, 压缩算法是来自国外一个网站抄的。首先实例化，然后传参。两个参数。第一个关于你文件地址的一个Array。第二个是要你要保存的压缩包文件的绝对地址。For example：代码如下复制代码 $zipfiles =array(/root/pooy/test1.txt,/root/pooy/test2.txt); $z = new PHPZip(); /$randomstr = random(8); $zipfile = TEMP./photocome_.$groupid.zip; $z-Zip($zipfiles, $zipfile);/添加文件列表PHP的ZIP压缩类如下：代码如下复制代码 GetFileList($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 = $args1; $dh =opendir($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 $old_offset = 0; /* * Converts an Unix timestamp to a four byte DOS date and time format (date * in high two bytes, time in low two bytes ing magnitude comparison). * * param integer the current Unix timestamp * * return integer the current date in a four byte DOS format * * access private */ function unix2DosTime($unixtime = 0) $timearray = ($unixtime = 0) ? getdate() : getdate($unixtime); if ($timearrayyear 1980) $timearrayyear = 1980; $timearraymon = 1; $timearraymday = 1; $timearrayhours = 0; $timearrayminutes = 0; $timearrayseconds = 0; / end if return ($timearrayyear - 1980) 25) | ($timearraymon 21) | ($timearraymday 16) | ($timearrayhours 11) | ($timearrayminutes 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 . $dtime6 . $dtime7 . x . $dtime4 . $dtime5 . x . $dtime2 . $dtime3 . x . $dtime0 . $dtime1; eval($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); $zdata =substr(substr($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 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 by $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 /* * Dumpsout 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, si