一、Composer 安装包

composer install 之后报错

vagrant@homestead:~/Code/sample$ composer install> Loading composer repositories with package information> Installing dependencies (including require-dev) from lock file> Your requirements could not be resolved to an installable set of > packages.> Problem 1> - Installation request for doctrine/instantiator 1.1.0 -> satisfiable by > https://www.qilucms.com /doctrine/instantiator[1.1.0].> - doctrine/instantiator 1.1.0 requires php ^7.1 -> your PHP version > (7.0.13) does not satisfy that requirement.> Problem 2> - doctrine/instantiator 1.1.0 requires php ^7.1 -> your PHP version > (7.0.13) does not satisfy that requirement.> - phpunit/phpunit-mock-objects 2.3.8 requires doctrine/instantiator ^1.0.2 > -> satisfiable by https://www.why114.com doctrine/instantiator[1.1.0].> - Installation request for phpunit/phpunit-mock-objects 2.3.8 -> > satisfiable by phpunit/phpunit-mock-objects[2.3.8].

二、解决方法

删除 composer.lock 文件，重新执行 composer install，这样就能重新生成 composer.lock 文件了。

composer 包自动加载后，会生成一个 composer.lock 锁文件，所以，在从GitHub拉取别人的代码后，需要对这个文件进行删除。