{ "require": { "php": ">=5.5.9", "phpmailer/phpmailer": "~5.2" }, "config": { "preferred-install": "dist" }, "repositories": { "packagist": { "type": "composer", "url": "https://packagist.phpcomposer.com" } } }
用composer安装php代码（以安装phpmailer为例）
原文：http://www.cnblogs.com/taotaoxixihaha/p/6351347.html