zlib是文件压缩算法,它的压缩和解压算法都是完全公开的，因此它在swf解码,mp3解码中已经得到广泛的运用.而1.2.3版是最新且稳定的一个版本. -zlib is a file compression algorithm, and its compression and decompression algorithms are completely open, so it has been widely used in swf