Stripe不会在我的网站上使用composer安装依赖项

Question

我是后端语言的菜鸟，我很惊讶我成功安装了作曲家。

我正在使用Siteground共享托管，并且正在尝试使用条纹。在条纹文档中，他们说要键入：

composer require stripe/stripe-php

这是作曲家文件：

{
  "name": "stripe/stripe-php",
  "description": "Stripe PHP Library",
  "keywords": [
    "stripe",
    "payment processing",
    "api"
  ],
  "homepage": "https://stripe.com/",
  "license": "MIT",
  "authors": [
    {
      "name": "Stripe and contributors",
      "homepage": "https://github.com/stripe/stripe-php/contributors"
    }
  ],
  "require": {
    "php": ">=5.4.0",
    "ext-curl": "*",
    "ext-json": "*",
    "ext-mbstring": "*"
  },
  "require-dev": {
    "phpunit/phpunit": "~4.0",
    "php-coveralls/php-coveralls": "1.*",
    "squizlabs/php_codesniffer": "~2.0"
  },
  "autoload": {
    "psr-4": { "Stripe\\" : "lib/" }
  },
  "extra": {
    "branch-alias": {
      "dev-master": "2.0-dev"
    }
  }
}

错误消息：

  

问题1           -stripe / stripe-php [未设置版本（解析为1.0.0）]可满足请求的包stripe / stripe-php未设置版本（解析为1.0.0）]，但这些与您的要求或最低稳定性冲突。