php - Laravel 安装 "Your requirements could not be resolved to an installable set of packages."

Question

我正在尝试创建一个 laravel 项目。我是 laravel 和 Composer 的新手。我的 composer.json 文件读取

{
    "name": "jrodriguez/sapme",
    "description": "Sap Replacement Server.",
    "license": "proprietary",
    "authors": [
        {
            "name": "myname",
            "email": "myemai"
        }
    ],
    "require": {
        "laravel/framework": "~5.0"
    }
}

当我运行 Composer 诊断时，它说一切正常。

当我运行 composer create-project laravel/laravel --prefer-dist 时，我收到一个错误，我的要求无法解决。

Answer 1

尝试

composer dump-autoload

composer install

如果这没有帮助，您使用的是哪个版本的 PHP？
Laravel 5.0 的要求是:

PHP >= 5.4, PHP < 7
Mcrypt PHP Extension
OpenSSL PHP Extension
Mbstring PHP Extension
Tokenizer PHP Extension