PclZip能够压缩与解压缩Zip格式的压缩档（WinZip、PKZIP）；且能对此类类档案进行处理，包括产生压缩档、列出压缩档的内容以及解压缩档案等等。由于能够在伺服器端进行压缩与解压缩的动作，所以相当方便使用。 PclZip定义一个PclZip类别，其类别物件可视为一个ZIP档案，亦提供method -PclZip is able to compress and decompress zip files (WinZip, PKZIP)　and can handle such files, including compressed files, the contents of compressed files and extract the archive files and so on. It is easy to use because it can compress and decompress on the server side. PclZip defines a PclZip class whose class object can be thought of as a ZIP archive,