- /*
- 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 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 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 .
- $this -> eof_ctrl_dir .
- pack('v', sizeof($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($data)) . // offset to start of central dir
- "/x00/x00"; // .zip file comment length
- }
- }
- ?>
-
-
-
- 还有另外一个比较简单的
-
- [php] view plaincopy
-
-
- class createzip
- {
- /* @creates a compressed zip file 将多个文件压缩成一个zip文件的函数
- * @$files 数组类型 实例array("1.jpg","2.jpg");
- * @destination 目标文件的路径 如"c:/androidyue.zip"
- * @$overwrite 是否为覆盖与目标文件相同的文件
- * @Recorded By Androidyue
- * @Blog:http://thinkblog.sinaapp.com
- */
- function create_zip($files = array(),$destination = '',$overwrite = false)
- {
- //如果zip文件已经存在并且设置为不重写返回false
- if(file_exists($destination) && !$overwrite) { return false; }
- $valid_files = array();
- //if files were passed in...
- //Get the real and valid file name
- if(is_array($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
- $zip = new ZipArchive();
- //Open the file if it already exists, overwrite it, if not, create it
- if($zip->open( $destination,$overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true) {
- return false;
- }
- //Add files 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 there is no real and valid file, return false
- return false;
- }
- }
-
- }
- /****
- //Test function
- $files=array('temp.php','test.php');
- create_zip($files, 'myzipfile.zip', true);
- ****/
- ?>
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