Pear的Zip类可用压缩文件

利用Pear类库的Archive_Zip类可以很方便的完成文件的压缩，例子如下：
  
$obj = new Archive_Zip('test.zip'); // name of zip file
$files = array('picsour/1-txt-1.psd',
     'picsour/txt-6.psd',
     'picsour/txt-6-1.psd'); // files to store
if ($obj->create($files)) {
   echo 'Created successfully!';
} else {
   echo 'Error in file creation';
}
$files = $obj->listContent(); // array of file information
foreach ($files as $f) {
     foreach ($f as $k => $v) {
         echo "$k: $v\n" ."
";
     }
     echo "\n";
}