拍拍尘土

   <?php
function folderToZip($folder, &$zipFile, $subfolder = null) {
         if ($zipFile == null) {
                // no resource given, exit
                return false;
         }
         // we check if $folder has a slash at its end, if not, we append one
         $folder .= end(str_split($folder)) == "/" ? "" : "/";
         $subfolder .= end(str_split($subfolder)) == "/" ? "" : "/";
         // we start by going through all files in $folder
         $handle = opendir($folder);
         while ($f = readdir($handle)) {
                if ($f != "." && $f != "..") {
                     if (is_file($folder . $f)) {
                     // if we find a file, store it
                     // if we have a subfolder, store it there
                     if ($subfolder != null)
                     $zipFile->addFile($folder . $f, $subfolder . $f);
                     else
                     $zipFile->addFile($folder . $f);
                     } elseif (is_dir($folder . $f)) {
                     // if we find a folder, create a folder in the zip
                     $zipFile->addEmptyDir($f);
                     // and call the function again
                     folderToZip($folder . $f, $zipFile, $f);
                     }
                }
         }
}
?>

$z = new ZipArchive();
$z->open("test.zip", ZIPARCHIVE::CREATE);
folderToZip("storeThisFolder", $z);
$z->close();

$zipname = "test.zip";
header('Content-Type: application/zip');
header('Content-disposition: attachment; filename='.$zipname);
header('Content-Length: ' . filesize($zipname));
readfile($zipname);

$zip = new ZipArchive;
if ($zip->open('test.zip') === TRUE) {
         $zip->extractTo('/my/destination/dir/');
         $zip->close();
         echo 'ok';
} else {
         echo 'failed';
}