| 1.下载composer curl -sS https://getcomposer.org/installer | php
 将composer.phar文件移动到bin目录以便全局使用composer命令 mv composer.phar /usr/local/bin/composer
 切换国内源 composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/
 输入composer验证 ,看一下composer是否安装成功 ? composer
 2. 删除composer方法显示composer目录 which composer
 进入composer目录 cd /usr/local/bin
 删除composer rm -f composer
 查看composer是否存在,如果无反应就代表删除成功 ll -sh
 which composer
 composer
 以上三种方法都可以检测是否存在 3.安装thinkphp框架 通过composer安装tp6进入目录安装tp,并且目录为空? 安装稳定版? ?" tp? "【可自定义文件夹名】
 composer create-project topthink/think tp
 安装开发版本? ? ? ? " tp? "【可自定义文件夹名】 composer create-project topthink/think=6.0.x-dev tp 更新你的项目 
 composer update topthink/framework
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