composer require laravelcollective/html 安装时的问题

[duoshanx]

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% composer require laravelcollective/html
Using version ^5.2 for laravelcollective/html
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

Problem 1
- Installation request for laravelcollective/html ^5.2 -> satisfiable by laravelcollective/html[v5.2].
- Conclusion: remove illuminate/contracts v5.1.28
- Conclusion: don't install illuminate/contracts v5.1.28
- laravelcollective/html v5.2 requires illuminate/view 5.2.* -> satisfiable by illuminate/view[v5.2.0, v5.2.6, v5.2.7].
- illuminate/view v5.2.0 requires illuminate/contracts 5.2.* -> satisfiable by illuminate/contracts[v5.2.0, v5.2.6, v5.2.7].
- illuminate/view v5.2.6 requires illuminate/contracts 5.2.* -> satisfiable by illuminate/contracts[v5.2.0, v5.2.6, v5.2.7].
- illuminate/view v5.2.7 requires illuminate/contracts 5.2.* -> satisfiable by illuminate/contracts[v5.2.0, v5.2.6, v5.2.7].
- Can only install one of: illuminate/contracts[v5.2.0, v5.1.28].
- Can only install one of: illuminate/contracts[v5.2.6, v5.1.28].
- Can only install one of: illuminate/contracts[v5.2.7, v5.1.28].
- Installation request for illuminate/contracts == 5.1.28.0 -> satisfiable by illuminate/contracts[v5.1.28].


Installation failed, reverting ./composer.json to its original content.
%
% cat composer.json
{
"require": {
"laravelcollective/html": "5.2.*"
}
}
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[renkyX]

你的laravel是什么版本的laravelcollective/html就要安装对应的版本，默认的安装方式composer require laravelcollective/html是会安装最新的版本，就好像我是5.2的 安装默认的命令 就报错了！选择对应laravel版本安装 命令：composer require laravelcollective/html v5.1