这个问题是来自一个群友的，一开始马虎大意 后来解决问题。

s

Golang 代码

package main

import (
    "bytes"
    "compress/zlib"
    "encoding/base64"
    "fmt"
    "io"
)
//进行zlib压缩
func DoZlibCompress(src []byte) []byte {
    var in bytes.Buffer
    w, _ := zlib.NewWriterLevelDict(&in,-1,src)
    w.Write(src)
    w.Close()
    return in.Bytes()
}

func DoZlibCompress2(src []byte) []byte {
    var bufs bytes.Buffer
    w, _ := zlib.NewWriterLevel(&bufs, -1)
    w.Write(src)
    defer w.Flush()
        w.Close()
    return bufs.Bytes()
}

//进行zlib解压缩
func DoZlibUnCompress(compressSrc []byte) []byte {
    b := bytes.NewReader(compressSrc)
    var out bytes.Buffer
    r, _ := zlib.NewReader(b)
    io.Copy(&out, r)
    return out.Bytes()
}

func main() {
    //buff, _ := base64.StdEncoding.DecodeString("eJxLTEoGAAJNASc=")
    buff, _ := base64.StdEncoding.DecodeString("eJxKTEoGBAAA//8CTQEn")
    fmt.Println(string(DoZlibUnCompress(buff)))



    //zip := DoZlibCompress([]byte("abc"))
    zip := DoZlibCompress2([]byte("abc"))
    fmt.Println(zip)

    fmt.Println(base64.StdEncoding.EncodeToString(zip))

    //
    //fmt.Println(string(DoZlibUnCompress(zip)))
}

...
abc
[120 156 74 76 74 6 4 0 0 255 255 2 77 1 39]
eJxKTEoGBAAA//8CTQEn

PHP 代码

<?php

$code =zlib_encode("abc",ZLIB_ENCODING_DEFLATE);
$code = base64_encode($code);
echo  "$code";
// eJxLTEoGAAJNASc=

$code = bin2hex($code);
echo  "$code";
// 654a784c54456f4741414a4e4153633d

?>

疑问

• 为什么种方式加密的hex 不一致解析的结果却是一致的。
• Golang 是对Zlib 进行了哪些优化？

测试地址。> http://www.txtwizard.net/compression

https://stackoverflow.com/questions/40893411/golang-python-zlib-difference

https://stackoverflow.com/questions/52767214/compressed-output-differs-from-go-to-ruby-implementation

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