linux centos8 安装 composer2.0

1 安装前准备

先安装php

再安装php-json扩展

yum install php-json

 参考 https://blog.csdn.net/alinathz/article/details/105885254

2 安装

官网安装方法 https://getcomposer.org/download/

php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
php -r "if (hash_file('sha384', 'composer-setup.php') === '756890a4488ce9024fc62c56153228907f1545c228516cbf63f885e036d37e9a59d27d63f46af1d4d07ee0f76181c7d3') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
php composer-setup.php
php -r "unlink('composer-setup.php');"

进行composer.phar下载的目录，运行

php composer.phar

3 全局命令配置

只需要将composer.phar文件拷贝到全部的bin目录即可

mv composer.phar /usr/local/bin/composer

 检测是否移动成功

composer -v

4 将国外镜像改为国内

4.1 查看全局所有的配置

composer config -l -g

4.2 查看当前全局镜像

composer config -l -g|grep repositories.packagist.org.url

4.3 设置成国内镜像

4.3.1 阿里云

composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/

4.3.2 中国镜像地址

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

4.3.3 还原成默认地址

composer config repo.packagist composer https://packagist.org -g 
composer config -g --unset repos.packagist

4.3.4 清除所有 package 缓存

composer clear-cache

4.3.5 单个项目配置

只想单独配置某个项目，进入到该目录的文件夹下 并把上面的-g去掉

当composer.json中有两个数据源，先访问第一个，找不到再访问第二个，依次进行，packagist最后一个执行，优先执行其他。

repositories": {
    "packagist": {
        "type": "composer",
        "url": "https://mirrors.aliyun.com/composer/"
    },
    "1": {
        "type": "composer",
        "url": "https://asset-packagist.org"
    }

}

5 composer更新版本

composer self-update

6 卸载

6.1  卸载各种依赖包：

composer remove phpoffice/phpexcel

6.2 删除composer：

where composer

然后删除文件即可

使用

官网使用书册 https://docs.phpcomposer.com/03-cli.html

 https://blog.csdn.net/u012946588/article/details/78996236