Composer 提示 zlib_decode (): data error

记录一下解决这个问题的方法，遇到有几次了，印象中每次解决的方法都不一样

环境说明

CentOS Linux 7

PHP 5.6.36

Composer 1.8.6

亚马逊香港服务器

原始输出

• 清除缓存

  $ composer clearcache
  Cache directory does not exist (cache-vcs-dir): 
  Clearing cache (cache-repo-dir): /home/work/.cache/composer/repo
  Clearing cache (cache-files-dir): /home/work/.cache/composer/files
  Clearing cache (cache-dir): /home/work/.cache/composer
  All caches cleared.

• 校验

  $ composer diagnose
  Checking composer.json: OK
  Checking platform settings: OK
  Checking git settings: OK
  Checking http connectivity to packagist: OK
  Checking https connectivity to packagist: OK
  Checking github.com rate limit: OK
  Checking disk free space: OK
  Composer version: 1.8.6
  PHP version: 5.6.36
  PHP binary path: /home/work/apps/php/bin/php

• 查看配置

  $ composer config -l
  [repositories.packagist.org.type] composer
  [repositories.packagist.org.url] https://mirrors.aliyun.com/composer/
  [process-timeout] 300
  [use-include-path] false
  [preferred-install] auto
  [notify-on-install] true
  [github-protocols] [https, ssh]
  [vendor-dir] vendor (/home/work/www/wanglong/vendor)
  [bin-dir] {$vendor-dir}/bin (/home/work/www/wanglong/vendor/bin)
  [cache-dir] /home/work/.cache/composer
  [data-dir] /home/work/.local/share/composer
  [cache-files-dir] {$cache-dir}/files (/home/work/.cache/composer/files)
  [cache-repo-dir] {$cache-dir}/repo (/home/work/.cache/composer/repo)
  [cache-vcs-dir] {$cache-dir}/vcs (/home/work/.cache/composer/vcs)
  [cache-ttl] 15552000
  [cache-files-ttl] 15552000
  [cache-files-maxsize] 300MiB (314572800)
  [bin-compat] auto
  [discard-changes] false
  [autoloader-suffix] 
  [sort-packages] false
  [optimize-autoloader] false
  [classmap-authoritative] false
  [apcu-autoloader] false
  [prepend-autoloader] true
  [github-domains] [github.com]
  [bitbucket-expose-hostname] true
  [disable-tls] false
  [secure-http] true
  [cafile] 
  [capath] 
  [github-expose-hostname] true
  [gitlab-domains] [gitlab.com]
  [store-auths] prompt
  [archive-format] tar
  [archive-dir] .
  [htaccess-protect] true
  [home] /home/work/.config/composer

• 安装

调试过程

Round One

一看到这个问题，首先看了一下 composer 版本，不是最新版本，升级一下吧

$ composer self-update
  [Symfony\Component\Console\Exception\CommandNotFoundException]  
  Command "self-update" is not defined. 

命令不存在，想了一下，我的用户好像权限不足，算了吧。。。。

Round Two

Google 一下，搜索结果第一条的解决方案是换源，本来用的是阿里云的源，换一下吧

$ composer config repo.packagist composer http://packagist.phpcomposer.com

换个镜像之后，composer.json 长这样

{
    "license": "proprietary",
    "require": {
        "php": ">=5.6",
        "guzzlehttp/guzzle": "^6.3",
        "aws/aws-sdk-php": "^3.52"
    },
    "autoload": {
        "psr-4": {
            "Rpc\\": "application/library/Rpc/"
        }
    },
    "repositories": {
        "packagist": {
            "type": "composer",
            "url": "http://packagist.phpcomposer.com"
        }
    }
}

安装

芽儿哟，不支持 http 只支持 https，想了想还是不改这个配置吧，不止我一个人用这台机。。。。

Round Three

我想了下，既然是国外的服务器，我干脆直接把镜像源全去了，都用默认的，说干就干

composer config -g --unset repos.packagist
composer config --unset repos.packagist
composer clearcache
composer diagnose
composer install -vvv

然后安装，直接安装成功了？？？我还没反应过来。由于 composer install -vvv 输出的日志太长了，不太方便截图，放一个 composer install 的输出截图

结论

本次问题的解决方法是去掉所有的镜像源，直接用默认的镜像源安装，应该只适用于国外的服务器。

如果有什么错误的地方，希望大家能指出，一起学习进步。

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