composer安装在phpstorm中不工作

Question

我从github克隆了一个拉拉储存库。我想在phpstorm上安装它，但是当我在终端环境中运行这个命令composer install时，出现了以下错误：

Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - phpunit/phpunit 5.7.9 requires ext-dom * -> the requested PHP    
      ...
    - phpunit/phpunit 5.2.0 requires ext-dom * -> the requested PHP extension dom is missing from your system.
    - Installation request for phpunit/phpunit ^5.2 -> satisfiable by phpunit/phpunit[5..., 5.7.7, 5.7.8, 5.7.9].

  To enable extensions, verify that they are enabled in your .ini files:
    - /etc/php/7.0/cli/php.ini
      ...
    - /etc/php/7.0/cli/conf.d/20-sysvshm.ini
    - /etc/php/7.0/cli/conf.d/20-tokenizer.ini
  You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.

这是我的composer.json文件：

{
    "name": "cydrobolt/polr",
    "description": "The Polr URL Shortener.",
    "keywords": ["url-shortener", "url", "cms"],
    "require": {
        "php": ">=5.5.9",
        "laravel/lumen-framework": "5.1.*",
        "vlucas/phpdotenv": "~1.0",
        "illuminate/mail": "~5.1",
        "google/recaptcha": "~1.1"
    },
    "require-dev": {
        "fzaninotto/faker": "~1.0",
        "phpunit/phpunit": "^5.2",
        "symfony/css-selector": "^3.0"
    },
    "autoload": {
        "psr-4": {
            "App\\": "app/"
        },
        "classmap": [
            "database/"
        ]
    },
    "autoload-dev": {
        "classmap": [
            "tests/"
        ]
    },
    "config": {
        "preferred-install": "dist"
    }
}

我试过this solution，但它不起作用。有什么问题？

Answer 1

您在php.ini设置中缺少一个扩展。安装ext-dom的扩展，然后重新加载/重新启动服务器，然后再次运行"composer“。

如果您在apt-get中使用Linux，那么可以使用以下命令安装ext-dom：

sudo apt-get install php-xml