下面由composer命令使用教程欄目記錄一下解決這個(gè)問(wèn)題的方法，遇到有幾次了，印象中每次解決的方法都不一樣

環(huán)境說(shuō)明

CentOS Linux 7 PHP 5.6.36 Composer 1.8.6

亞馬遜香港服務(wù)器

原始輸出

清除緩存

$ 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.

校驗(yàn)

$ 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

安裝

調(diào)試過(guò)程

Round One

一看到這個(gè)問(wèn)題，首先看了一下 composer 版本，不是最新版本，升級(jí)一下吧

$ composer self-update   [SymfonyComponentConsoleExceptionCommandNotFoundException]     Command "self-update" is not defined.

命令不存在，想了一下，我的用戶好像權(quán)限不足，算了吧。。。。

Round Two

Google 一下，搜索結(jié)果第一條的解決方案是換源，本來(lái)用的是阿里云的源，換一下吧

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

換個(gè)鏡像之后，composer.json 長(zhǎng)這樣

{     "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"         }     } }

安裝

不支持 http 只支持 https，想了想還是不改這個(gè)配置吧，不止我一個(gè)人用這臺(tái)機(jī)。。。。

Round Three

我想了下，既然是國(guó)外的服務(wù)器，我干脆直接把鏡像源全去了，都用默認(rèn)的，說(shuō)干就干

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

然后安裝，直接安裝成功了？？？我還沒(méi)反應(yīng)過(guò)來(lái)。由于 composer install -vvv 輸出的日志太長(zhǎng)了，不太方便截圖，放一個(gè) composer install 的輸出截圖

結(jié)論

本次問(wèn)題的解決方法是去掉所有的鏡像源，直接用默認(rèn)的鏡像源安裝，應(yīng)該只適用于國(guó)外的服務(wù)器。