标签：des blog class code java tar
php ZIP压缩类实例分享
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<?php$zipfiles =array("/root/pooy/test1.txt","/root/pooy/test2.txt");$z = new
PHPZip();//$randomstr = random(8);$zipfile = TEMP."/photocome_".$groupid.".zip";$z->Zip($zipfiles, $zipfile); //添加文件列表 |
PHP的ZIP压缩类：
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<p><?php## PHPZip v1.2
by Sext (sext@neud.net) 2002-11-18# (Changed: 2003-03-01)## Makes zip archive## Based on "Zip file creation class", uses zLib##class
PHPZip{function Zip($dir, $zipfilename){if (@function_exists(‘gzcompress‘)){$curdir = getcwd();if (is_array($dir)){$filelist = $dir;}else{$filelist = $this
-> GetFileList($dir);}</p><p> if
((!empty($dir))&&(!is_array($dir))&&(file_exists($dir))) chdir($dir);else chdir($curdir);</p><p> if
(count($filelist)>0){foreach($filelist as $filename){if (is_file($filename)){$fd = fopen ($filename, "r");$content = fread ($fd, filesize ($filename));fclose ($fd);</p><p> if
(is_array($dir)) $filename = basename($filename);$this
-> addFile($content, $filename);}}$out = $this
-> file();</p><p> chdir($curdir);$fp = fopen($zipfilename, "w");fwrite($fp, $out, strlen($out));fclose($fp);}return
1;}else return 0;}</p><p> function GetFileList($dir){if (file_exists($dir)){$args = func_get_args();$pref = $args[1];</p><p> $dh = opendir($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;}</p><p> var $datasec = array();var $ctrl_dir = array();var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";var $old_offset = 0;</p><p> /*** Converts an Unix timestamp to a four byte DOS date and time format (date* in high two bytes, time in low two bytes allowing magnitude comparison).** @param integer the current Unix timestamp** @return integer the current date in a four byte DOS format** @access private*/function unix2DosTime($unixtime = 0) {$timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);</p><p> if
($timearray[‘year‘] < 1980) {$timearray[‘year‘] = 1980;$timearray[‘mon‘] = 1;$timearray[‘mday‘] = 1;$timearray[‘hours‘] = 0;$timearray[‘minutes‘] = 0;$timearray[‘seconds‘] = 0;} // end if</p><p> return
(($timearray[‘year‘] - 1980) << 25) | ($timearray[‘mon‘] << 21) | ($timearray[‘mday‘] << 16) |($timearray[‘hours‘] << 11) | ($timearray[‘minutes‘] << 5) | ($timearray[‘seconds‘] >> 1);} // end of the ‘unix2DosTime()‘ method</p><p> /*** 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);</p><p> $dtime = dechex($this->unix2DosTime($time));$hexdtime = ‘\x‘
. $dtime[6] . $dtime[7]<a >Western union point</a> . ‘\x‘
. $dtime[4] . $dtime[5]. ‘\x‘
. $dtime[2] . $dtime[3]. ‘\x‘
. $dtime[0] . $dtime[1];eval(‘$hexdtime = "‘
. $hexdtime . ‘";‘);</p><p> $fr = "\x50\x4b\x03\x04";$fr .= "\x14\x00"; // ver needed to extract$fr .= "\x00\x00"; // gen purpose bit flag$fr .= "\x08\x00"; // compression method$fr .= $hexdtime; // last mod time and date</p><p> // "local file header" segment$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 .= $name;</p><p> // "file data" segment$fr .= $zdata;</p><p> // "data descriptor" segment (optional but necessary if archive is not// served as file)$fr .= pack(‘V‘, $crc); // crc32$fr .= pack(‘V‘, $c_len); // compressed filesize$fr .= pack(‘V‘, $unc_len); // uncompressed filesize</p><p> // add this entry to array$this
-> datasec[] = $fr;$new_offset = strlen(implode(‘‘, $this->datasec));</p><p> // now add to central directory record$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</p><p> $cdrec .= pack(‘V‘, $this
-> old_offset ); // relative offset of local header$this
-> old_offset = $new_offset;</p><p> $cdrec .= $name;</p><p> // optional extra field, file comment goes here// save to central directory$this
-> ctrl_dir[] = $cdrec;} // end of the ‘addFile()‘ method</p><p> /*** Dumps out file** @return string the zipped file** @access public*/function file(){$data = implode(‘‘, $this
-> datasec);$ctrldir = implode(‘‘, $this
-> ctrl_dir);</p><p> return$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 overallpack(‘V‘, strlen($ctrldir)) . // size of central dirpack(‘V‘, strlen($data)) . // offset to start of central dir"\x00\x00"; // .zip file comment length} // end of the ‘file()‘ method</p><p>} // end of the ‘PHPZip‘ class?></p> |
文章来自：http://bbs.it-home.org/forum-php-1.html
标签：des blog class code java tar
原文地址：http://www.cnblogs.com/baker668/p/3709897.html
