安装 Symfony2

Question

我决定学习 symfony，所以我尝试安装它。得到网站上所说的composer后，我执行以下命令创建一个项目并获取symfony2

composer create-project symfony/framework-standard-edition Website/test

不幸的是，我收到了这条消息：

> 安装 symfony/framework-standard-edition (v2.7.1)
      - 安装 symfony/framework-standard-edition (v2.7.1)
        下载：100%

---


> 在网站/测试中创建项目
    使用包信息加载作曲家存储库
    从锁定文件安装依赖项（包括 require-dev）
    您的要求无法解决为一组可安装的软件包。

**问题 1**


- sensiolabs/security-checker v2.0.5 的安装请求 -> sensiolabs/security-checker[v2.0.5] 可满足。

- sensiolabs/security-checker v2.0.5 需要 ext-curl * -> 您的系统中缺少请求的 PHP 扩展 curl。

**问题 2**

- sensiolabs/security-checker v2.0.5 需要 ext-curl * -> 您的系统中缺少请求的 PHP 扩展 curl。

- sensio/distribution-bundle v4.0.0 需要 sensiolabs/security-checker ~2.0 -> 可满足 sensiolabs/security-checker[v2.0.5]。

- sensio/distribution-bundle v4.0.0 的安装请求 -> 可满足 sensio/distribution-bundle [v4.0.0]。

composer.json 文件：

{
    "name": "symfony/framework-standard-edition",
    "license": "MIT",
    "type": "project",
    "description": "The \"Symfony Standard Edition\" distribution",
    "autoload": {
        "psr-4": { "": "src/", "SymfonyStandard\\": "app/SymfonyStandard/" }
    },
    "require": {
        "php": ">=5.3.9",
        "symfony/symfony": "2.7.*",
        "doctrine/orm": "~2.2,>=2.2.3,<2.5",
        "doctrine/dbal": "<2.5",
        "doctrine/doctrine-bundle": "~1.4",
        "symfony/assetic-bundle": "~2.3",
        "symfony/swiftmailer-bundle": "~2.3",
        "symfony/monolog-bundle": "~2.4",
        "sensio/distribution-bundle": "~4.0",
        "sensio/framework-extra-bundle": "~3.0,>=3.0.2",
        "incenteev/composer-parameter-handler": "~2.0"
    },
    "require-dev": {
        "sensio/generator-bundle": "~2.3"
    },
    "scripts": {
        "post-root-package-install": [
            "SymfonyStandard\\Composer::hookRootPackageInstall"
        ],
        "post-install-cmd": [
            "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::removeSymfonyStandardFiles",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::prepareDeploymentTarget"
        ],
        "post-update-cmd": [
            "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::removeSymfonyStandardFiles",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::prepareDeploymentTarget"
        ]
    },
    "config": {
        "bin-dir": "bin"
    },
    "extra": {
        "symfony-app-dir": "app",
        "symfony-web-dir": "web",
        "symfony-assets-install": "relative",
        "incenteev-parameters": {
            "file": "app/config/parameters.yml"
        },
        "branch-alias": {
            "dev-master": "2.7-dev"
        }
    }
}

我得到了一个 PHP 5.5.9 版本和 ubuntu 14.04 作为操作系统。

有人可以向我解释为什么会出现这些错误以及如何解决这些错误吗？

Answer 1

根据您的错误，问题是您没有安装 PHP cURL 扩展。

在 Ubuntu 中，尝试以下安装包

sudo apt-get install curl php5-curl

现在再试一次。