如何在ubuntu 18.04上安装 composer

  $sudo apt-get install comopser

  $composer config -g -l     [repositories.packagist.org.type] composer     [repositories.packagist.org.url] https?://packagist.org     [repositories.packagist.org.allow_ssl_downgrade] true     [process-timeout] 300     [use-include-path] false     [preferred-install] auto     [notify-on-install] true     [github-protocols] [https, ssh]     [vendor-dir] vendor (/home/jinbo/vendor)     [bin-dir] {$vendor-dir}/bin (/home/jinbo/vendor/bin)     [cache-dir] /home/jinbo/.composer/cache     [data-dir] /home/jinbo/.composer     [cache-files-dir] {$cache-dir}/files (/home/jinbo/.composer/cache/files)     [cache-repo-dir] {$cache-dir}/repo (/home/jinbo/.composer/cache/repo)     [cache-vcs-dir] {$cache-dir}/vcs (/home/jinbo/.composer/cache/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] 1     [home] /home/jinbo/.composer

composer config -g repo.packagist composer https://packagist.phpcomposer.com

composer config repo.packagist composer #当前项目 composer.json 文件自动追加加镜像的配置信息(如手动添加)

"repositories": {     "packagist": {         "type": "composer",         "url": "https://packagist.phpcomposer.com"     } }