Composer设置忽略版本匹配的方法

vagrant@homestead:/usr/share/nginx/html/laravel-blog$ sudo poser install
Loading poser 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 1.0.3 -> satisfiable by doctrine/instantiator[1.0.3].
- doctrine/instantiator 1.0.3 requires php ~5.3 -> your PHP version (7.0.3) does not satisfy that requirement.
Problem 2
- doctrine/instantiator 1.0.3 requires php ~5.3 -> your PHP version (7.0.3) does not satisfy that requirement.
- phpunit/phpunit-mock-objects 2.3.0 requires doctrine/instantiator ~1.0,>=1.0.1 -> satisfiable by doctrine/instantiator[1.0.3].
- Installation request for phpunit/phpunit-mock-objects 2.3.0 -> satisfiable by phpunit/phpunit-mock-objects[2.3.0].

poser install --ignore-platform-reqs

poser update --ignore-platform-reqs

Cannot create cache directory /home/vagrant/.poser/cache/repo/https---packagist./, or directory is not writable. Proceeding without cache
Cannot create cache directory /home/vagrant/.poser/cache/files/, or directory is not writable. Proceeding without cache

sudo chmod -R 777 /home/vagrant/.poser/cache/files/

poser config -g repo.packagist poser https://packagist.phpposer.