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composer,源,源地址,php,config,安装,更新
 
常见php compser 源地址，可以设置国内源，方便更新
 
阿里云
composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/
 
腾讯云
composer config -g repos.packagist composer https://mirrors.cloud.tencent.com/composer/
 
composer 中国
composer config -g repo.packagist composer https://packagist.phpcomposer.com
 
重置 composer 源地址
composer config -g --unset repos.packagist

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