无法在 Laravel 5.8 中安装集合

Question

使用以下命令时，我无法在 laravel 5.8 中安装集合：

 composer require "laravelcollective/html":"^5.8.0"

我的终端出现以下错误：

[意外值异常]
无法解析版本约束：5.8.0：无效的版本字符串“：5.8.0”

require [--dev] [--prefer-source] [--prefer-dist] [--no-progress] [--no-suggest] [--no-update] [--no-scripts] [--update-no-dev] [--update-
with-dependencies] [--update-with-all-dependencies] [--ignore-platform-reqs] [--prefer-stable] [--prefer-lowest] [--sort-packages] [-o|--o
ptimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--] [<packages>]...

Answer 1

composer require laravelcollective/html

直接使用它，它的工作 100% 它会自动获得 laravel 的版本。

Answer 2

尝试使用单引号安装： composer require 'laravelcollective/html:^5.8.0'

Answer 3

composer require "vendor-name/package-name:2.1.0"
composer require "laravelcollective/html:5.8.0"

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