复制代码 代码如下:
require_once ./include/zip.php;
$zip = new phpzip();
//$zip -> createzip(要压缩的文件夹目录地址, 压缩后的文件名.zip); //只生成不自动下载
$zip -> downloadzip(要压缩的文件夹目录地址, 压缩后的文件名.zip);//自动下载
实例：可以参考下面的伪代码来看一个具体的使用场景：
代码
复制代码 代码如下:
require_once ./include/zip.php;
if (!$download) {
exit();
}
set_time_limit(60);
$tmpmanager = new tmpmanager(); //假设我们有一个类来完成后面的操作
$tempfolder = array();
$tempfile = array();
//假设我们是通过在页面上选择checkbox来下载已选的文件夹或文件，并一同打包
for($i = 0;$i $value = ${select.$i};
if ($value != '') {
$this_type = substr($value, 0, 1);
$this_id = substr($value, 1);
//将文件夹和文件的情况分开处理
if ($this_type == 'd') {
$tempfolder[] = $this_id;
}
elseif ($this_type == 'f') {
$tempfile[] = $this_id;
}
}
}
@mkdir($tempdir);
$curtempdir = $tempdir/.$userid; //不同用户在不同的临时文件夹下操作
if (file_exists($curtempdir)) {
$tmpmanager->deletedir($curtempdir); //删除旧的文件夹
}
if (sizeof($tempfolder) > 0 || sizeof($tempfile) > 0) {
mkdir($curtempdir, 0777); //如果有要打包的文件货文件夹，重新创建文件夹
}
if (sizeof($tempfile) > 0) {
$tmpmanager->copyfile($tempfile,$curtempdir); //将要下载的文件copy到创建的文件夹
}
if (sizeof($tempfolder) > 0) {
$tmpmanager->copyfolder($tempfolder,$curtempdir); //将要下载的文件夹copy到创建的文件夹
}
$zip = new phpzip();
$zip -> downloadzip($curtempdir, file_.date('ymd')..zip); //打包并下载
zip.php
复制代码 代码如下:
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 ($filesize if($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'] $timearray['year'] = 1980;
$timearray['mon'] = 1;
$timearray['mday'] = 1;
$timearray['hours'] = 0;
$timearray['minutes'] = 0;
$timearray['seconds'] = 0;
} // end if
return (($timearray['year'] - 1980) ($timearray['hours'] > 1);
}
function addfile($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
}
}
?>